function handleCategory(select) {
	var url = window.location.href;
	if(url.search(/\?/) == -1) {
		url = url+'?1=1';
	}
	var value = select.options[select.options.selectedIndex].value;
	var location = url.split("&catId");
	if (value == "-1") {
		window.location = location[0]+"&catId="+value;
	} else {
		window.location = location[0]+"&catId="+value+"&subCatId=-1";
	}
}

function handleSubCategory(select) {
	var url = window.location.href;
	if(url.search(/\?/) == -1) {
		url = url+'?1=1';
	}
	var value = select.options[select.options.selectedIndex].value;
	var location = url.split("&subCatId");
	if (location[0].indexOf("&catId=") == "-1") {
		window.location = location[0]+"&catId=-1&subCatId="+value;
	} else {
		window.location = location[0]+"&subCatId="+value;
	}
}

function handleDamFiles(select) {
	var url = window.location.href;
	if(url.search(/\?/) == -1) {
		url = url+'?1=1';
	}
	var value = select.options[select.options.selectedIndex].value;
	var location = url.split("&damId");
	window.location = location[0]+"&damId="+value;
}