function img_cache(url, width, height) {
	var img = new Image(width, height);
	img.src = url;
	return img;
}

function find_index(id) {
	for (i=0;i<src_names.length;i++) 
		if (id == src_names[i])
			return i;
}

function img_click(id) {
	if (id==page_id)
		return false;
	document.getElementById(id).src = img_selected[find_index(id)].src;
}

function img_over(id) {
	last = id;
	if (id==page_id)
		return false;
	document.getElementById(id).src = img_highlight[find_index(id)].src;
}

function img_out() {
	if (last == page_id)
		return false;
	document.getElementById(last).src = img_original[find_index(last)].src;
}

function img_select() {
	if (page_id != "")
		document.getElementById(page_id).src = img_selected[find_index(page_id)].src;
}

function prepareSearchField(){
	if (document.getElementById("searchfield")) {
		var f = document.getElementById("searchfield");
		f.focus();
		f.select();
	}
}

function validate_search(id) {
	if (document.getElementById(id)) {
		var obj = document.getElementById(id);
		var obj_value = obj.value;
		var rule = new RegExp(obj.alt, "i");
		if (!rule.test(obj_value)) {
			window.alert(obj.title);
			obj.focus();
			obj.style.borderColor = "red";
			return false;
		} 
	}
	return true;
}
function ajax_showoptions(obj, id) {
	if ((''+obj.value).length > 2) {
			
	}
}

function showoptions(obj) {
	document.getElementById("xdata").src = "";
	document.getElementById("xdata").src = "/options.asp?query=" + obj.value;
}