function addToCB(woid, pid, cnum){
	var url = '/comparisons/add/' + woid + '?pid=' + pid + '&cnum=' + cnum;
	$.getScript(url);
}

function removeFromCB(woid, pid, cnum){
	var url = '/comparisons/remove/' + woid + '?pid=' + pid + '&cnum=' + cnum;
	$.getScript(url);
}