function popDemo(prodID, ref, page, skip, file) {
	var path = "http://www.rolandus.com/products/demo.aspx";
	path += "?prodID="+prodID+"&ref="+ref+"&page="+page+"&skip="+skip+"&file="+file;
	var args = "width=620,height=350,resizable=no,toolbar=no,location=no,";
	args += "directories=no,status=no,scrollbars=no,menubar=no";
	
	try
	{
	var demoWin = window.open(path, prodID, args);
	demoWin.focus();
	}
	catch(ex)
	{
		alert(ex.message);
	}
}