function changeInfo(mlid, certid){
		for(var i=0; i < CertInfos[mlid].length; i++){
			//debugger;
			document.getElementById('cert_info_'	+ CertInfos[mlid][i]).style.display = 'none';
		}
		document.getElementById('cert_info_'	+ certid).style.display = '';
	};
	function submitForm(mlid){
		//debugger
		var selected_cert = 0;
		for(var i=0; i < CertInfos[mlid].length; i++){
			if(document.getElementById('cert_'	+ CertInfos[mlid][i]).checked){
				selected_cert = CertInfos[mlid][i];
				break;
			}
		}
		var qty = 	document.getElementById('cert_qty_'+mlid+'_'+selected_cert).value;
		//alert('you selected cert id: ' + selected_cert + '  quantity:' + qty);
		document.additem.cid.value = selected_cert;
		document.additem.qty.value = qty;
		document.additem.submit();
	}
	function viewCart(){
		document.additem.submit();
	}