var slide_time = 5000; 
 var fade_time = 1000;
 
 $(document).ready(
 function(){

   activate_slide(1);
   t = setTimeout('slide()', slide_time);   
   
   $(".slide_row").hover(
        function () {
            $(this).addClass("hover");
          },
          function () {
            $(this).removeClass("hover");
          }
   );
   
   $(".slide_row").click(
        function () {
            activate_slide($(this).attr("row_number")) 
            wait_and_slide(slide_time);  
          });});
 
 
 function slide(){
   
   current_slide =  $('.active[row_number]').attr("row_number");

   if (!current_slide) current_slide = 1; 
   next_slide =  parseInt(current_slide) + 1;
   if ( next_slide > 3) next_slide = 1;
   
   $('.collage_large_image').css('display','none'); 
   $('.collage_large_image[row_number='+current_slide+']').css('display','block'); 
   $('.collage_large_image[row_number='+next_slide+']').css('display','block');  
      
   activate_slide(next_slide,current_slide,0);
   wait_and_slide(slide_time);
 } 
 
 function wait_and_slide(milisec){
   clearTimeout(t);
   t = setTimeout('slide()', milisec);  
 }
 
 function activate_slide(id,previous_id,opacity){

   if (opacity > 1){  
       $('.collage_large_image').css('display','none'); 
       $('.collage_large_image[row_number='+id+']').css('display','block');
       $('.collage_large_image').removeClass("active");
       $('.collage_large_image[row_number='+id+']').addClass("active");
   } else {
      $('.collage_large_image[row_number='+previous_id+']').css('z-index',5);
      $('.collage_large_image[row_number='+id+']').css('z-index',6); 
      $('.collage_large_image[row_number='+id+']').css('opacity',opacity);
      new_opacity = parseFloat(opacity) + 0.1;
      t1 = setTimeout('activate_slide(\''+id+'\',\''+previous_id+'\',\''+new_opacity+'\')', fade_time/10); 
   }
   
 }