$(document).ready(function(){
	
	
	$("#nav li").not("[@id$='_on']").hover(function() {
		img = $(this).css('background-image');
		reg = /\.gif/;
		newimg = img.replace(reg, '_over.gif');
		$(this).css({ backgroundImage:newimg, cursor:'pointer' });
		}, function() {
		
		$(this).css({ backgroundImage:img });
		
	});
	
});

$(window).bind('load', function() {
    var preload = new Array();
    $("#nav li").each(function() {
		img = $(this).css('background-image');
		reg = /url\(\"?([^"\)]*)"?\)/;
		pre = img.match(reg);
		pre = pre[1];
		reg = /\.gif/;
		newimg = pre.replace(reg, '_over.gif');
        preload.push(newimg);
        newimg = pre.replace(reg, '_on.gif');
        preload.push(newimg);
    });
    
    /* preload images */
    preload.push('../images/elements/inner_background.jpg');
    // preload.push('../images/services/arrow_open.gif');
    preload.push('../images/services/button_more_info_over.gif');
    preload.push('../images/services/badge_relax_over.gif');
    preload.push('../images/services/badge_relieve_over.gif');
    preload.push('../images/services/badge_reframe_over.gif');
    
    var img = document.createElement('img');
    $(img).bind('load', function() {
        if(preload[0]) {
            this.src = preload.shift();
        }
    }).trigger('load');
});