problem with java script in tabpanel

[kd21]

i have a jsp page when i run that page individually Java script validations are working but, when i invoke this page as a tabpanel java script validations are not working.(we are ussing setUrl() method of the content panel)


(when i rightclick and view source of this page i cant see contents of the new jsp page).


we are calling jsp page from our index page
Click here (javascript:Layout.registerShow())


then i calls registerShow() method from the .js file here i am getting the new page but javascript validations are not working

regPanel=new YAHOO.ext.ContentPanel('center2', {title: 'Register', closable: true});
layout.add('center', regPanel);


registerShow: function(){
tabPanel.unhideTab('center2');
tabPanel.activate('center2');
regPanel.setUrl("merchant_signup.jsp", null, true );
regPanel.refresh();
},


Thanks in advance