function calcHeight()
{
//find the height of the internal page inside the iframe
var the_height=document.getElementById('frmPoll').contentWindow.document.body.scrollHeight;
//change the height of the iframe to match the hight with the content page
document.getElementById('frmPoll').height=the_height+10;
}

  function validate()							
			{
					  
			   var radioList=document.getElementById('rbtnAnswer');			   
			
			   var checked = 0;

			   if (radioList != null) {

			       var radioButton = radioList.getElementsByTagName('input');
			       	
			       for (i = 0; i < radioButton.length; i++) {

			           if (radioButton[i].type == 'radio') {
			               if (radioButton[i].checked) {			                   
			                   checked =+1;			                  
			               }
			           }
			       }
			   }			  
			 
			   if (checked == 0) {

			       alert("Please select vote first "); return false;
			   }
			   else {
			      
			       return true;
			   }


		}