if (document.images) {
	log_on = new Image();
	log_off = new Image();
	log_on.src = "../images/tlink_log_on.gif";
	log_off.src = "../images/tlink_log_off.gif";
	main_on = new Image();
	main_off = new Image();
	main_on.src = "../images/tlink_main_on.gif";
	main_off.src = "../images/tlink_main_off.gif";
	prod_on = new Image();
	prod_off = new Image();
	prod_on.src = "../images/tlink_prod_on.gif";
	prod_off.src = "../images/tlink_prod_off.gif";
	news_on = new Image();
	news_off = new Image();
	news_on.src = "../images/tlink_news_on.gif";
	news_off.src = "../images/tlink_news_off.gif";
	talk_on = new Image();
	talk_off = new Image();
	talk_on.src = "../images/tlink_talk_on.gif";
	talk_off.src = "../images/tlink_talk_off.gif";
	car_on = new Image();
	car_off = new Image();
	car_on.src = "../images/tlink_car_on.gif";
	car_off.src = "../images/tlink_car_off.gif";
	comp_on = new Image();
	comp_off = new Image();
	comp_on.src = "../images/tlink_comp_on.gif";
	comp_off.src = "../images/tlink_comp_off.gif";
}
function imgOn(imgIn) {
	if (document.images) {
		document[imgIn].src = eval(imgIn + "_on.src");
	}
}                        
function imgOff(imgIn) {
	if (document.images) {
		document[imgIn].src = eval(imgIn + "_off.src");
	}
}
function checkSearch() {
	if (document.search.text.value=="") {
		alert("Please enter at least one keyword to search.");
		document.search.text.focus();
		return false;
	}
	document.search.submit();
}