var product_type_names = new Array;
var sub_product_types = new Array;
sub_product_types["All"] = new Array("0");
function updateProducts() {
	var pt_menu = document.forms[0]["Location"];
	var the_type = pt_menu.options[pt_menu.selectedIndex].value;
	var spt_menu = document.forms[0]["Manufacturer"];
	if (the_type) {
		var i=0;
		for (i=0; i<sub_product_types[the_type].length; i++) {
			if (spt_menu.options.length < i+1) spt_menu.options[i] = new Option;
			spt_menu.options[i].value = sub_product_types[the_type][i];
			spt_menu.options[i].text = product_type_names[sub_product_types[the_type][i]];
			if (sub_product_types[the_type][i] == "undefined") spt_menu.options[i].selected = true;
		}
		//if (spt_menu.options.length < i+1) spt_menu.options[i] = new Option;
		spt_menu.focus();
		spt_menu.selectedIndex = 0;
	}
	else {
		pt_menu.selectedIndex = 0;
		spt_menu.selectedIndex = 0;
		while (spt_menu.options.length > 0) {
			spt_menu.options[spt_menu.options.length-1] = null;
		}
	}
	while (spt_menu.options.length > i) {
		spt_menu.options[spt_menu.options.length-1] = null;
	}
	var ua = navigator.userAgent;
	if (ua.indexOf("Mozilla") == 0 && ua.indexOf("MSIE") == -1 && ua.indexOf("Win") != -1 && parseInt(navigator.appVersion) == 4) history.go(0);
}