Link rotating images in existing javascript -

its been while since i've dug heals js , use help. looking modify existing script include link each rotating image... want link object called "text" same url each image. ideas?

//cur_index = 1; cur_index = math.floor(math.random()*6); //var randomnumber=math.floor(math.random()*11) num_image = 5; //alert(cur_index); interval  = 300000; // 5min between rotations function rotate(){    // if(cur_index > num_image)    //    cur_index = 1;         if(cur_index == 0)        cur_index = 1;     var imag,text;     if(document.getelementbyid){         imag = document.getelementbyid("faceimage");         text = document.getelementbyid("facetext");     }else if(document.all) {                 imag = document.all["faceimage"];         text = document.all["facetext"];     }else if(document.layers){         imag = document.layers["faceimage"];         text = document.layers["facetext"];     }      var imageurl = "/path/face" + cur_index + ".jpg";     var texturl = "/path/face" + cur_index + "_text.gif";     imag.src = imageurl;     text.src = texturl;     //cur_index++;     cur_index = math.floor(math.random()*6);     settimeout('rotate()',interval); }