Vote Script ( Java Script ) iframe problem

Question

Ok guy's i'm new with "Javascript", i decide to make vote script for all user's in xtremetop100.com
So here we go:
i trying make javascript function that check every 1 sec if iframe url is correct
So that's mean when i finish voting on that url, the javascript function will notice that iframe url is changed so
after iframe url is changed ( by voting ), then it will be show me message " Thank u for vote ".
Here is unploaded script , but it doesn't work: http://crystal-dekaron.zxq.net/
<script type="text/javascript">
var sitefr = document.getElementById("inneriframe")
{if
(sitefr.contentWindow.location!="http://www.xtremetop100.com/dekaron")
    alert ("Thanks for vote!");
    window.location="http://www.google.com"
    else
    alert ("U didn't vote!");
    window.location="http://www.help.com"
window.setInterval(check, 1000);
</script>
after 60 second's pass, vote will be disabled ( i made that function )
I tryed that scipt with "inneriframe", and it doesn't work, only shows alert after i load page, but i didn't vote and url didn't change

Answer 1

Hello Preran, i want a make javascript. Here is following step(s)
1. Java Script that checking every 1 sec, if iframe url is changed!
So what is mean's?, I just create a iframe with a following url: http://xtremetop100.com/ but if someone click on any button in this iframe, then it will pm message or something like it.
But exactly what I wanted to say:
I got my game server.And I'm advertising it on xtremetop100 game's (site) , so i creating a script that checking if user votefor me. They will rective a coins ( ingame ), but how can
i know if someone vote for me, simple so the vote page is: http://www.xtremetop100.com/in.php?site=1132341231 ( in iframe ), so i made iframe size to 400 x 300 so other thing's won't be disabear on screen.
After it, if user click " Vote for Crystal Dekaron " ( my game ), iframe will be redirected to url http://www.xtremetop100.com/dekaron. After it i just asking people how can i make script if iframe url is changed!
Because i can't inspect source code's on this page so i decide to make javascript that check every 1 sec if user changed a iframe url
I hope you understand it. I'll add more pictures.
[xtremetop100.com isn't my website just using iframe to his site to prove if someone vote's for me]