function Random_image(name){
	this.name=name;
}
var Random_imageList = new Array();
Random_imageList[Random_imageList.length] = new Random_image('images/Index/1.jpg')
Random_imageList[Random_imageList.length] = new Random_image('images/Index/2.jpg')
Random_imageList[Random_imageList.length] = new Random_image('images/Index/3.jpg')
Random_imageList[Random_imageList.length] = new Random_image('images/Index/4.jpg')


	j=parseInt(Math.random()*Random_imageList.length)
	j=isNaN(j)?0:j;
	document.write('<img src="'+Random_imageList[j].name+'" border="0" />');