function OpenSerialNumberPopup(){
	var popupH = 500;
	var popupW = 680;
	
	var url = "Modules/TechSupport/SerialNumberInfo.aspx";
	var params = "";
	
	try
	{
		var prodType = getSelectedItem();
		
		try{ params = (prodType.indexOf("Hood") != -1) ? "?mode=hood" : "?mode=vent"; }
		catch(ex){params = "?mode=none"; }
	}
	catch(ex){}	
	
	window.open(url+params, "", "width=" + popupW + ",height="+ popupH +",toolbar=0,directories=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,top=" + ((screen.height - popupH)/2) + ",left=" + ((screen.width - popupW)/2));
}