// JavaScript Document
var preLoadImg = new Object();
 
function initRollOvers(){
    $("#mainMenu img").each(function(){
        var imgSrc = this.src;
        var sep = imgSrc.lastIndexOf('.');
        var onSrc = imgSrc.substr(0, sep) + 'on' + imgSrc.substr(sep, 4);
        preLoadImg[imgSrc] = new Image();
        preLoadImg[imgSrc].src = onSrc;
        $(this).hover(
            function() { this.src = onSrc; },
            function() { this.src = imgSrc; }
        );
    });
}

$(function(){
    initRollOvers();

	$("#hdbtn1").hover(
		function(){$("#btns").css('background-image','url(imgs/hd_btns_bg_map.gif)')},
		function(){$("#btns").css('background-image','url(imgs/hd_btns_bg.gif)')}
	);
	
	$("#hdbtn2").hover(
		function(){$("#btns").css('background-image','url(imgs/hd_btns_bg_mail.gif)')},
		function(){$("#btns").css('background-image','url(imgs/hd_btns_bg.gif)')}
	);
	
	$("#hdbtn3").hover(
		function(){$("#btns").css('background-image','url(imgs/hd_btns_bg_home.gif)')},
		function(){$("#btns").css('background-image','url(imgs/hd_btns_bg.gif)')}
	);

});