var image1 = new Image();
image1.src = "purple.gif";
var image2 = new Image();
image2.src = "red.gif";
var image3 = new Image();
image3.src = "blue.gif";
var image4 = new Image();
image4.src = "yellow.gif";
var image5 = new Image();
image5.src = "green.gif";
var image6 = new Image();
image6.src = "pink.gif";

function check()
	{
	var img_name = new Array("purple.gif", "red.gif", "blue.gif", "yellow.gif", "green.gif", "pink.gif");
	var l = img_name.length;
	var rnd_no = Math.floor(l*Math.random());
	document.r_img.src = img_name[rnd_no];
	}

function randomimageid()
	{
	var img_name = new Array("purple.gif", "red.gif", "blue.gif", "yellow.gif", "green.gif", "pink.gif");
	var l = img_name.length;
	var rnd_no = Math.floor(l*Math.random());
	document.getElementById("randomimage").src = img_name[rnd_no];
	}