function get_random()
{
    var ranNum= Math.floor(Math.random()*4);
    return ranNum;
}

   var whichQuote=get_random();

    var quote=new Array(4)
     quote[0]="/global/swf/clark_images0";
     quote[1]="/global/swf/clark_images1";
     quote[2]="/global/swf/clark_images2";   
     quote[3]="/global/swf/clark_images3";