function checkcart(){
var Path = window.location.pathname; 
if (Path.substring(Path.lastIndexOf('/')).toLowerCase() == '/shoppingcart.asp') {

$(function(){
$("[id^='Quantity']").each(function(){
$(this).data('default2', $(this).val());
});
$("[name='Proceed_To_Checkout_Form']").submit(function(){
var hasChanged = false;
$("[id^='Quantity']").each(function(){
if($(this).val() != $(this).data('default2')){
hasChanged = true;
}
});
if(hasChanged){
alert("The quantities of one or more items in your cart has changed, your cart will now be automatically recalculated.");
$('#btnRecalculate').trigger('click');
return false;
}
});
});
}
}