function calcHeight(elemName)
{
	if(checkBrowserName('MSIE')){  
		  var the_height=document.getElementById(elemName).contentWindow.document.body.scrollHeight; 
	}else{
		var the_height=document.getElementById(elemName).contentWindow.document.body.offsetHeight;
	}
	
  	document.getElementById(elemName).style.height = the_height+"px";
}


function checkBrowserName(name)
{  
	var agent = navigator.userAgent.toLowerCase();  
	if (agent.indexOf(name.toLowerCase())>-1) {  
		return true;  
	}else{
		return false;
	}
}