Check data valid with Java Script

Hi, every one,
I made a jsp program and just to check if the data is valid before submit. My problem is even the data is invalid, it still go to next jsp page and display alert message at the same time. But I think if the data is invalid, we can't go to next jsp page. So, any one can tell me what's wrong with my program.
Thanks in advance.
The source code is as follows:
<HTML><HEAD>
<TITLE>TEST PROGRAM</TITLE>
<SCRIPT LANGUAGE="JavaScript">
function validate(){
     if(document.form1.yourname.value.length < 1){
          alert("please enter your full name");
          return false;
     if(document.form1.address.value.length < 3){
          alert("please enter your address.");
          return false;
     if(document.form1.phone.value.length < 3){
          alert("please enter your phone number");
          return false;
     return true;
</SCRIPT>
</HEAD>
<BODY>
<H1>FORM EXAMPLE</H1>
Enter the following information. When you press the Display button,
the data you entered will be validated, then sent by e-mail.
<form name="form1" action="a2.jsp" enctype="text/plain" onSubmit="validate();">
<p>
<b>Name:</b><input type="text" length="20" name="yourname">
<p>
<b>Address:</b>
<input type="text" length="30" name="address">
<p>
<b>Phone:</b><input type="text" length="15" name="phone">
<p>
<input type="SUBMIT" value="Submit">
</FORM>
</BODY>
</HTML>

Hi,
I have another question. If i have a menu as follows and I just want to check the data valid on the current page. I mean, only value=1, 2,3 is valid, value=0 is invalid. How can I do?
<td valign="middle" width="63%"> <font face="Arial, Helvetica, sans-serif" size="2">
<select name="type">
<option value="0">Please Select One of The Following Reasons</option>
<option value="1">Exchange</option>
<option value="2">Refund</option>
<option value="3">Wrong Product</option>
</select>
</font></td>
</tr>
Thanks.
peter

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Hello Everyone!
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at com.sun.script.javascript.RhinoScriptEngine.eval(Unknown Source)
at javax.script.AbstractScriptEngine.eval(Unknown Source)
at solutiondatabase.ScriptingExample.runExample(ScriptingExample.java:26)
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Guys,
please let me raise this topic because several new questions emerged.
(1) How can I get all the variables created inside my engine?
There are two kinds of variables: first kind is Java obejcts put inside the engine and second kind is the variables created in my script, such as 'var a = 4;'. How can I list all the variables of that two kinds?
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Here is my example:
package mypackage;
import java.util.ArrayList;
import java.util.List;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineFactory;
import javax.script.ScriptEngineManager;
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Exception in thread "main" java.lang.ClassCastException: sun.org.mozilla.javascript.internal.NativeJavaObject cannot be cast to java.lang.Double
+     at mypackage.Main.main(Main.java:28)+
Is it possible to retrieve my Double java object from the engine?
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I want to read and assign value of ADF Table rows with Java Script

Hi,
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http://thepeninsulasedge.com/blog/2006/09/12/adf-faces-aftableselectmany/
http://thepeninsulasedge.com/blog/2006/08/31/adf-faces-working-with-aftableselectone-and-the-dialog-framework/
--RiC

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How to do a date validation with leap years

I'm doing a date validation program in my Java class, and well it's pretty hard (for me that is). I have to be able to type in a date, have it say whether it's a leap year or not, and print out the number of days in the month. It seems pretty straight forward, but I get confused on trying to do the 'if else' statements and even the simplest things like getting the day prompting to work. >< The years I'm doing only goes through 1000 to 1999, so that's why those numbers are there. The program isn't complete, so if anyone could help show me what I'm doing wrong in the areas I'm working on then I'd appreciate it...and I'm still kind of in the basics of Java so if you do hint me with some code then I'd appreciate it if it was stuff that's not too advanced so yea.
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// Determine whether a 2nd-millenium date entered by the user
// is valid
import java.util.Scanner;
public class Dates
public static void main(String[] args)
int month, day, year; //date read in from user
int daysInMonth; //number of days in month read in
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Scanner scan = new Scanner(System.in);
//Get integer month, day, and year from user
System.out.print("Type in the month: " );
          month = scan.nextInt();
System.out.print("Type in the day: " );
          day = scan.nextInt();
System.out.print("Type in the year: " );
          year = scan.nextInt();
//Check to see if month is valid
if (month >= 1)
month = month;
else
if (month <= 12)
month = month;
else;
//Check to see if year is valid
if (year >= 1000)
year = year;
else
if (year <= 1999)
year = year;
else;
//Determine whether it's a leap year
//Determine number of days in month
if (year == 1 || 3 || 5 || 7 || 8 || 10 || 12)
     System.out.println (Number of days in month is 31);
     else (year == 4 || 6 || 9 || 11)
     System.out.println (Number of days in month is 30);
//User number of days in month to check to see if day is valid
//Determine whether date is valid and print appropriate message
// Dates.java
// Determine whether a 2nd-millenium date entered by the user
// is valid
import java.util.Scanner;
public class Dates
public static void main(String[] args)
int month, day, year; //date read in from user
int daysInMonth; //number of days in month read in
boolean monthValid, yearValid, dayValid; //true if input from user is valid
boolean leapYear; //true if user's year is a leap year
Scanner scan = new Scanner(System.in);
//Get integer month, day, and year from user
System.out.print("Type in the month: " );
          month = scan.nextInt();
System.out.print("Type in the day: " );
          day = scan.nextInt();
System.out.print("Type in the year: " );
          year = scan.nextInt();
//Check to see if month is valid
if (month >= 1)
month = month;
else
if (month <= 12)
month = month;
else;
//Check to see if year is valid
if (year >= 1000)
year = year;
else
if (year <= 1999)
year = year;
else;
//Determine whether it's a leap year
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if (year == 1 || 3 || 5 || 7 || 8 || 10 || 12)
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Here are some helpfull hints for you:
1. Your code is really hard to read, there are two main reasons for this. First, your indentation sucks. Second, you seem to be fascinated with saving two (ok four if you count the shift key) keypresses to avoid using { and }.
2. Not using the brackets (you know { and } which you like to avoid) also is causing your code to do some stuff you don't realize or want to happen, or at least it would be if your code compiled.
3. If statements require arguements, "year == 1" is an arguement, "3" is not an arguement. Each operator like the or operator ("||") is essentially a new if and requires a complete arguement. So the following code peice:
if (year == 1 || 3 || 5 || 7 || 8 || 10 || 12)Literally translates to if year equals 1 or if 3 or if 5 or if 7 or if 8 or if 10 or if 12. Doesn't make much sense in english, and it doesn't make much sense in Java either.
4. I am pretty sure "year" is not the variable you want in the code snippet above (the one used in hint 3), especially considering years 1, 3, 5, 7, 8, 10, and 12 are not between 1000 and 1999. You need to be really carefull not make these kind of mistakes when coding, because they are by far the hardest to track down and fix later since they don't really throw up any flags or anything at compile or run time. Take your time and think thuroughly about each line of code while coding it, it will save you tons of time in the long run.
5. What exactly do you expect statements like "month = month;" to do? That translates as make month equal to month. Do you go to the bank and say " I have exactly $3.56 in my pocket, so I would like to deposite all $3.56 and then withdraw $3.56 and put it back in my pocket"? How do you think the teller would look at you? Teller would probably do it, but the teller would feel like he/she wasted time with you and that you are not really right in the head. Java feels the same way when you make it do the same thing, and you love to do it.
6. Code like the following is all wrong, and for more reasons than pointed out in hint 5.
if (month >= 1)
month = month;
else
if (month <= 12)
month = month;
else;Let's say someone put 13 in as the month. It passes the first check because 13 is greater than or equal to 1. so month which is 13, now gets set to 13 (gee that was effective). Now we hit the else and things get confusing because you didn't use brackets or proper indentation (hint 1) so we don't know what your real intent was. Did you mean else do nothing, and the next if statement is then executed, or did you mean to just run the next if statement if the else condition was met? Fortunatly it doesn't matter here because the next if statement is failed anyways since 13 is not less than or equal to 12.
So, we leave this code with month ebing 13, wait when did we add a 13th month to the calendar? Are you using the Jewish calendar? Could be, except even if I put 1234567 as the month your code would except it as valid, and I know no calendar with that many months. Try writing this in english first and translating it to jave, like i would probably say "if the month is greater than or equal to 1 and less than or equal to 12 then the month is valid." Course now what do you do if it is invalid? Hmm, maybe I would actually say "while the month is less than 1 or greater than 12 ask the user for the month" until they get it right.
There are a few other problems, but most of them are probably things you haven't learned yet, and they are not show stoppers so we will let them fly. You already have a lot of work to do to make this better. But I do have one more really really big usefull hint for you:
Never, ever, under any circumstances, should you ever ask in any way or even hint at asking for someone else to provide code solutions to your problems. So "so if you do hint me with some code then I'd appreciate it if it was stuff that's not too advanced " was a very bad thing to do, but fortunatly for you you followed it with proof you were trying to write the code yourself. Had the code you provided not been so full of problems it was obvious a beginner wrote it, you would probably have gotten much less cordial responses. I would seriously consider avoiding any implication of wanting code, at least until you become a regular poster here and people know you are not just looking to get your homework done for you.
Hope some of this helps.
JSG

Date validations in java

hi there,
I have just started using java, jsp and servlets.
I am facing the following problem.
I am getting a date string as an input and i want to have a date validation in my servlet to check whether the date is valid and existing and is not greater than the system date.
Of course this can be implemented using simple if else logic but i wanted to know whether such validations can be done by using a class like "Calendar" so that i can catch exceptions and use sendRedirect.
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Regards,
ninad.

Um, Java progamming? Not in the forum. We deal with JES Messaging Server only. Please try one of the developer forums where programming is discussed.

Web Reporting: Manipulate Description of query rows with JAVA Script

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Fishing data from a java script

Hi all,
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Check string validity with pattern

hello,
I want to check the validity of strings given by the user. The only characters authorized are : 'a' to 'z', 'A' to 'Z', '0' to '9', '.', '-', '_', '*', '@' and ' ' (space)
i want to check this string with a pattern but it does not work.
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Thanks
   String regex = "[a-zA-Z0-9.*-_@]";
   System.out.println(regex);
   boolean bol = Pattern.matches(regex, field);
   System.out.println(bol);
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try this:
import java.sql.*;
import java.io.*;
import java.util.regex.*;
import java.util.*;
public class RegExTest2 {
public static void main (String args[]) {
Pattern pat = null;
Matcher m = null;
String patternToMatch = "^[a-zA-Z0-9\\.\\*\\-\\_@\\s]+$";
String line1 = "IndianaJones";
String line2 = "Indiana Jones";
String line3 = "Indiana - Jones";
String line4 = "Indiana&Jones";
String line5 = "Indiana & Jones";
String line6 = " Indiana Jones ";
String line7 = "Indiana Jones =";
pat = Pattern.compile(patternToMatch);
System.out.println("Pattern to match = " + patternToMatch);
boolean bol = Pattern.matches(patternToMatch, line1);
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bol = Pattern.matches(patternToMatch, line2);
System.out.println("line2 : expected true and got " + bol);
bol = Pattern.matches(patternToMatch, line3);
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bol = Pattern.matches(patternToMatch, line4);
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bol = Pattern.matches(patternToMatch, line5);
System.out.println("line5 : expected false and got " + bol);
bol = Pattern.matches(patternToMatch, line6);
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bol = Pattern.matches(patternToMatch, line7);
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[End of TNS data channel] with Java SDO API (JDBC thin 9.0.1.2.1)

Hello folks,
Environment:
Win2K, 1.2GHz Intel, 500MB RAM, Oracle 9i, Oracle JDBC Thin (9.0.1.2.1), JDK1.3
Our data in the DB is 2-D. It consists of SDO LineString geometries. We use SRID = 8307.
I run into this problem with Java SDO API. I got this exception: "Io exception: End of TNS data channel"
when I try to execute query that uses the SDO_RELATE function:
SELECT e.shape
FROM edge e
WHERE SDO_RELATE(e.shape,
mdsys.sdo_geometry( 2003, 8307, NULL,
mdsys.sdo_elem_info_array(1,1003,1),
mdsys.sdo_ordinate_array(-125.8,49.9,-125.6,49.9,-125.6,50.0,-125.8,50.0,-125.8,49.9) ),
'mask=ANYINTERACT querytype=WINDOW') = 'TRUE'
If I use SDO_FILTER instead of SDO_RELATE it works!
Here is how I execute the query in Java:
public int executeSpatialQuery(OracleConnection conn, String spatialQuery) throws Exception
int numberOfGeometries = 0;
conn.setDefaultRowPrefetch(1000);
Statement ps = conn.createStatement();
ResultSet rs = ps.executeQuery(spatialQuery);
while (rs.next()) {
numberOfGeometries++;
rs.close();
ps.close();
return numberOfGeometries;
Note: I was playing with the "conn.setDefaultRowPrefetch(n)" method hoping that there might be something to do with that but with no success.
Any help will be much appreciated. Thank you.
GKK

Hello folks,
Here is what I've done:
1. Created a "mini" Realtional model (modelB) which mimics exactly our existing "big" Realtional model (modelA). The tables, sequences, indices, etc. in modelB have been created in exactly the same fashion we'd created the corresponding entities in modelA. The only difference is that I preceeded the entities in our test modelB with "TEST_".
2. Populated the modelB with 1298 Lakes (3993 edges in total) in exatly the same fashion we use to populate our modelA - using a Data Loader based on Java SDO API.
3. Indexed the test modelB in exactly the same fashion as modelA.
4. Ran the query:
SELECT e.shape FROM test_edge e WHERE SDO_RELATE(e.shape,
mdsys.sdo_geometry(
2003,
8307,
NULL,
mdsys.sdo_elem_info_array(1,1003,1),
mdsys.sdo_ordinate_array(
-123.80833332065798,48.58352678668598,
-123.80833332065798,48.675352618459506,
-123.65050767229724,48.675352618459506,
-123.65050767229724,48.58352678668598,
-123.80833332065798,48.58352678668598
), 'mask=ANYINTERACT querytype=WINDOW'
) = 'TRUE'
in SQL*PLUS and it worked fine (retrieved a bunch of geometries)!
Ran the same query in the Daniel Geringer's OraTest utility and it worked this time and returned:
TIME : 1.222 seconds, TOTAL FETCH TIME 267 ROWS
Ran the query with our JCS Query Plug-In and it worked fine!
ANALYSIS
========
ModelA
======
- 59652 Lakes and 178764 edges
- it's properly indexed
- its SDO layers and geometries are valid
- when we count the number of related SDO geometries for this query we get:
SQL> SELECT count(e.shape) FROM edge e WHERE SDO_RELATE(e.shape,
2 mdsys.sdo_geometry(
3 2003,
4 8307,
5 NULL,
6 mdsys.sdo_elem_info_array(1,1003,1),
7 mdsys.sdo_ordinate_array(
8 -123.80833332065798,48.58352678668598,
9 -123.80833332065798,48.675352618459506,
10 -123.65050767229724,48.675352618459506,
11 -123.65050767229724,48.58352678668598,
12 -123.80833332065798,48.58352678668598
13 )
14 ), 'mask=ANYINTERACT querytype=WINDOW'
15 ) = 'TRUE';
COUNT(E.SHAPE)
267
- when we run the following query via the Java SDO API:
SELECT e.shape FROM edge e WHERE SDO_RELATE(e.shape,
mdsys.sdo_geometry(
2003,
8307,
NULL,
mdsys.sdo_elem_info_array(1,1003,1),
mdsys.sdo_ordinate_array(
-123.80833332065798,48.58352678668598,
-123.80833332065798,48.675352618459506,
-123.65050767229724,48.675352618459506,
-123.65050767229724,48.58352678668598,
-123.80833332065798,48.58352678668598
), 'mask=ANYINTERACT querytype=WINDOW'
) = 'TRUE'
it FAILS with: "TNS end of communaction channel"!
ModelB
======
- 1298 Lakes and 3993 edges
- it's properly indexed
- its SDO layers and geometries are valid
- when we count the number of related SDO geometries for this query we get:
SQL> SELECT count(e.shape) FROM test_edge e WHERE SDO_RELATE(e.shape,
2 mdsys.sdo_geometry(
3 2003,
4 8307,
5 NULL,
6 mdsys.sdo_elem_info_array(1,1003,1),
7 mdsys.sdo_ordinate_array(
8 -123.80833332065798,48.58352678668598,
9 -123.80833332065798,48.675352618459506,
10 -123.65050767229724,48.675352618459506,
11 -123.65050767229724,48.58352678668598,
12 -123.80833332065798,48.58352678668598
13 )
14 ), 'mask=ANYINTERACT querytype=WINDOW'
15 ) = 'TRUE';
COUNT(E.SHAPE)
267
- when we run the following query via the Java SDO API:
SELECT e.shape FROM test_edge e WHERE SDO_RELATE(e.shape,
mdsys.sdo_geometry(
2003,
8307,
NULL,
mdsys.sdo_elem_info_array(1,1003,1),
mdsys.sdo_ordinate_array(
-123.80833332065798,48.58352678668598,
-123.80833332065798,48.675352618459506,
-123.65050767229724,48.675352618459506,
-123.65050767229724,48.58352678668598,
-123.80833332065798,48.58352678668598
), 'mask=ANYINTERACT querytype=WINDOW'
) = 'TRUE'
it SUCCESSFULLY returns the related geometries!
So, what can we make of all this? We know that there exists a model for which the SDO_RELATE works via the Java SDO API. This model is a subset (w.r.t. the data set) of our original model in which we detected the "TNS end of communication channel problem". The environment we used for these tests is exactly the same: JDBC Thin driver (version 9.0.1.0.0), Oracle9i Enterprise Edition (Release 9.0.1.2.1 - Production).
One can think that the problem lies in the Oracle Object-Realational or Oracle Spatial but the fact that we can successfully execute the same SDO_RELATE queries in SQL*PLUS rejects this possibility. Perhaps it depends on the amount of data passed to the JDBC driver and the fashion in which it handles it! In our test above we had RELATED 267 geometries. We know that there exist SDO_RELATE queries that run successfully with modelA, but those are queries which ONLY retrieve an EMPTY set of RELATED geometries. In other words we don't get the "TNS end of communication channel" because NO data gets fetched from the server to the client! As soon as we find a SDO_RELATE query which retrieves (RELATES) at least 1 geometry that runs successfully in SQL*PLUS and run it via the Java SDO API - it FAILS! This means that no matter what volume of data is fetched from the server-JDBCThin-SDOAPI-client as long as there is ANY data, the query FAILS in modelA.
Perhaps something internally in the Oracle 9i Server happens that prevent the data being fetch to the JDBCThin for that particular modelA. But what that might be?
Very peculiar problem!
Regards,
Georgi

How can I link to pages in a 2 level popup index/selection tree with java script?

I can do a single level popup index using the java script below (#1) and link the selections to pages but to change to a 2 level popup index selection tree as below (#2) I can't seem to figure out how to link to pages. Any help greatly appreciated. Thanks
1
var itemIndex = app.popUpMenu("INTRODUCTION", "ALPHABET", "GRAMMAR", "NUMBERS", "DATES & TIME", "GETTING TO KNOW PEOPLE", "PHRASES FOR LEARNING", "DIRECTIONS & TRANSPORTATION", "DESCRIBING THE TRAIL", "DO'S & DON'TS", "EQUIPMENT", "FOOD", "INTRODUCING A VILLAGE", "CULTURE AND ETHNIC GROUPS", "HANDICRAFTS", "TEMPLES & MONKS", "AGRICULTURE", "ANIMAL HUSBANDRY", "SCHOOL & EDUCATION", "LEADING A TREK", "NATIONAL PROTECTED AREAS", "IDENTIFYING WILDLIFE", "PLANTS & FORESTS", "BOATS", "CAVES", "HEALTH AND SAFETY")
switch (itemIndex) {
case "INTRODUCTION":
this.pageNum = 1
break
case "ALPHABET":
this.pageNum = 2
break
case "GRAMMAR":
this.pageNum = 5
break
case "NUMBERS":
this.pageNum = 30
break
case "DATES & TIME":
this.pageNum = 35
break
case "GETTING TO KNOW PEOPLE":
this.pageNum = 42
break
case "PHRASES FOR LEARNING":
this.pageNum = 56
break
case "DIRECTIONS & TRANSPORTATION":
this.pageNum = 59
break
case "DESCRIBING THE TRAIL":
this.pageNum = 63
break
case "DO'S & DON'TS":
this.pageNum = 68
break
case "EQUIPMENT":
this.pageNum = 74
break
case "FOOD":
this.pageNum = 83
break
case "INTRODUCING A VILLAGE":
this.pageNum = 96
break
case "CULTURE AND ETHNIC GROUPS":
this.pageNum = 105
break
case "HANDICRAFTS":
this.pageNum = 120
break
case "TEMPLES & MONKS":
this.pageNum = 126
break
case "AGRICULTURE":
this.pageNum = 131
break
case "ANIMAL HUSBANDRY":
this.pageNum = 140
break
case "SCHOOL & EDUCATION":
this.pageNum = 145
break
case "LEADING A TREK":
this.pageNum = 151
break
case "NATIONAL PROTECTED AREAS":
this.pageNum = 155
break
case "IDENTIFYING WILDLIFE":
this.pageNum = 161
break
case "PLANTS & FORESTS":
this.pageNum = 169
break
case "BOATS":
this.pageNum = 175
break
case "CAVES":
this.pageNum = 178
break
case "HEALTH AND SAFETY":
this.pageNum = 182
break
2
var aINTRODUCTION = ["INTRODUCTION", "How to Use This Book", "Format"];
var aALPHABET = ["ALPHABET", "Vowel Sounds", "Consonant Sounds"];
var itemIndex = app.popUpMenu(aINTRODUCTION, aALPHABET);
Thanks.

Thanks. I've got it now. I was mistakenly renaming itemIndex to each section...Introduction, Alphabet

Sreaming at the top of my lungs for HELP with Java Script problem!

Hello,
I have this strange problem that no one seems to know why or how to fix it.Whenever I encounter a web site that has java scripting for anything pop ups or redirects to url's anything that says java script when I mouse over the link my browsers do nothing.That is for explorer 6.0 beta netscape 4.7 and netscape version 6.I have tried in another forum some suggestions but nothing changed even though I am told nothing is wrong with the java scripting.I used to be able to click java script's with all of these browsers but no longer.That was a few months ago.Now to try something new I tried to see if a new browser would work.I now have the latest version of Opera.It did work but using Opera on some sites limits what I can do so it doesn't solve my problem.Then I tried the Sun JavaHot browser it also worked but limits what I can do on some site's.I have Windows 98 & updated most of my dll's etc & my java is version 2 1.3.1.My java script is enabled in Explorer & netscape's & the security is at a minimum level.Please help me figure out why these other browsers work but the other's do not.I want to edit a web site of mine but I can't because of this problem.I am very frustrated by this and need as detailed help as I can get.Anything of a suggestion would be very much appreciated.But I am also not an expert on the working's of a computer so bear with me.
Brian

Hi,
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Brian

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