function showImage(){

var path = "includes/templates/ks_tpl/";
var mainArray = new Array();
mainArray[0] = "<img src='" + path + "images/main_img_01.jpg' />";
mainArray[1] = "<img src='" + path + "images/main_img_02.jpg' />";
mainArray[2] = "<img src='" + path + "images/main_img_03.jpg' />";
var n = Math.ceil(Math.random()*mainArray.length) -1 ;
//alert("n=" + n ) ;
document.write(mainArray[n]);

}