function checkQuantity(a) {
		var errs='';
		a = a + 1;
		if(document.forms[a].elements[0].value+"" == ""){
			errs=errs + "Please enter a Quantity \n";
		}
		if (errs==''){
			document.forms[a].submit();
		}
		else{
			alert(errs);
		}
	}