function ValidateNumber(field)
{
    var val = field.value;
    if(!/^\d*$/.test(val)||val==0)
    {
        alert("Please enter a quantity greater than zero.\n\nTo delete the basket contents push the delete button.");
        field.focus();
        field.select();
    } 
}
function RecordUpdate(ID)
{
    var ThisID = "*" + (ID) + "*"
    if (document.basket.changedids.value == "")
    {
        document.basket.changedids.value = (ThisID)
    }
    if (document.basket.changedids.value != "")
    {
        var str = document.basket.changedids.value;
        var pos = str.indexOf(ThisID);
        if (pos == -1)
        {
            document.basket.changedids.value = document.basket.changedids.value + ", " + (ThisID)
        }
    }
}