function formHandlerCat(cat){
var URL = document.cat.category.options[document.cat.category.selectedIndex].value;
window.location.href = URL;
}

function formHandlerSubcat(subcat){
var URL = document.subcat.subcategory.options[document.subcat.subcategory.selectedIndex].value;
window.location.href = URL;
}

function formHandlerProd(prod){
var URL = document.prod.product.options[document.prod.product.selectedIndex].value;
window.location.href = URL;
}