can someone help me with this problem;
i want to be able to feed a value from a dropdown list A as a condition for items in dropdown list B. both dropdown list are in the same form. the values for both dropdown list are extracted from my mysql database.
location.href = location + "?Category=" + theForm.CategoryName.value }
this works fine if i only click once on dropdown list A but the if i happen to click again from dropdown list A, then the link would be something like "http://localhost/product.php?Category=food?Category=drink"
how to i replace the category argument value?
thanks in advance