Change Item Type at Run Time!!

Hi all,
I am using apex 4.0, and I want to know if their is any plug-in that can help me to change the type of an item at run time.
what exactly i want to do is to change the type of an item according to the value of a select list, for example when the user select a specific value from the select list,this item should be displayed as a date piker.
so, can any one help me?
thanks in advance,
Ola,

Hi,
Here is sample
https://apex.oracle.com/pls/otn/f?p=40323:81
When you select "Date" from select list and submit Field is changed to datepicker.
I did create select list P81_SELECT with static LOV
STATIC2:Text;T,Date;DNormal text item P81_FIELD and to page JavaScript Execute when Page Loads
if($v('P81_SELECT')=='D'){
$('#P81_FIELD').datepicker({showOn:'both',buttonImage:'#IMAGE_PREFIX#asfdcldr.gif',buttonImageOnly:true});
}Regards,
Jari

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SQL> ed
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