img = new Array();
img[0] = "1.jpg";
img[1] = "2.jpg";
img[2] = "3.jpg";
img[3] = "4.jpg";
img[4] = "5.jpg";

function setImage1(){
	amount = img.length;
	No = Math.floor(Math.random()*amount);
	document.write("<img src='/library/nck/top_images/p_top_main" + img[No] + "' width='890' height='170' border='0'>");
}

function setImage2(){
	amount = img.length;
	No = Math.floor(Math.random()*amount);
	document.write("<img src='/library/nck/top_images/s_top_main" + img[No] + "' width='890' height='200' border='0'>");
}

function setImage3(){
	amount = img.length;
	No = Math.floor(Math.random()*amount);
	document.write("<img src='/library/nck/top_images/j_head_main" + img[No] + "' width='434' height='175' border='0'>");
}