function popupWindow(page, winName, option)
{
	if (option == "")
		option = "toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=yes,resizable=no,width=550,height=650";
	window.open(page, winName, option);
}

function checkSelection(theForm, totalItem, url)
 {
	var selectStr = ''
	var checkCount = 0
	for (var i=0; i<totalItem; i++) {
	    myType = document.frmReview.elements[i].type;	
	   		       
	    if (myType == 'checkbox') {
	        if (document.frmReview.elements[i].checked) 
	        {
				if (selectStr.length > 0)
					selectStr += ','
				selectStr += document.frmReview.elements[i].value;
				checkCount++
	        }
	       }
	}
	
	if (checkCount == 0)
	{
		alert("Please select at least one item.")			
		return false;
	}		
	else
	{	
		url = url + "PDF.aspx?content=" + selectStr
		option = 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=yes,resizable=yes,width=600,height=550'
		popupWindow (url, 'PDF', option); 
	
	}
	
 }