function setCompare(Checked, ProductID, CategoryID)
{
	compReq = new XMLHttpRequest();
	if (Checked) {
		compReq.open('GET', '/compare.php?CategoryID=' + CategoryID + '&a=' + ProductID, false);
		compReq.send();
	} else {
		compReq.open('GET', '/compare.php?CategoryID=' + CategoryID + '&r=' + ProductID, false);
		compReq.send();
	}
}