if (document.images)
    {
      preload_image_object = new Image();
      // set image url
      image_url = new Array();
      image_url[0] = "http://vietnamgoldenholidays.com/images/advertise/70_2522010_45058.jpg";
      image_url[1] = "http://vietnamgoldenholidays.com/images/advertise/10_2522010_4456.jpg";
      image_url[2] = "http://vietnamgoldenholidays.com/images/advertise/20_2522010_44547.jpg";
      image_url[3] = "http://vietnamgoldenholidays.com/images/advertise/30_2522010_44644.jpg";
      image_url[4] = "http://vietnamgoldenholidays.com/images/advertise/40_2522010_44720.jpg";
      image_url[5] = "http://vietnamgoldenholidays.com/images/advertise/60_2522010_44750.jpg";

       var i = 0;
       for(i=0; i<=3; i++) 
         preload_image_object.src = image_url[i];
    }
    
    
function init()
{
	if (document.getElementById)
		var x = document.getElementById('mouseovers').getElementsByTagName('IMG');
	else if (document.all)
		var x = document.all['mouseovers'].all.tags('IMG');
	else return;
	var preloads = new Object();
	for (var i=0;i<x.length;i++)
	{
		preloads['menubar_11ac'+x[i].id] = new Image;
		preloads['menubar_11ac'+x[i].id].src = '../images/'+ x[i].id + '.jpg';
		preloads['menubar_11'+x[i].id] = new Image;
		preloads['menubar_11ac'+x[i].id].src = '../images/'+ x[i].id + '.jpg';
		preloads['menubar_11ac'+x[i].id].onerror = function () {this.src='../images/logo.gif'}
		x[i].onmouseover = function () {this.src=preloads['o'+this.id].src;}
		x[i].onmouseout = function () {this.src=preloads['n'+this.id].src;}
	}
}