<!-- 
var pic, alt;
pic = new Array;
pic[0] = "images/img_random1.jpg";
pic[1] = "images/img_random2.jpg";
pic[2] = "images/img_random3.jpg";
pic[3] = "images/img_random4.jpg";



var now = new Date();
var seed = now.getTime() % 0xffffffff;

function rand(n) {
seed = (0x015a4e35 * seed) % 0x7fffffff;
return ( seed >> 16 ) % n;
} 

var num = rand(4);

document.write("<img name='main_image' src='" + pic[num] + "' width='415' height='147' border='0' usemap='#Map'>"); 

//-->