function win(link,win_width,win_height){
           var w=(screen.width)/2 - (win_width/2);
           var h=(screen.height)/2 - (win_height/2); 
           window.open(link, '_blank', 'top='+h+',left='+w+',width='+win_width+',height='+win_height+',status=yes,toolbar=no,location=no,resizable=no,scrollbars=yes');
  }

  function imgs(name,arr) {

           var new_arr = arr.split(",");
           var count_ph = new_arr.length;
           count_ph--;
           var i = 0;
           var j;
           while(i <= count_ph) {
             document.getElementById(new_arr[i]).className = "thumbnail_preview";
             if (new_arr[i] == name) j = i + 1;
             i++;
           }
           if (j > count_ph) j = 0;
           //alert(j);
           document.getElementById("imgs").innerHTML = "<a href=\"javascript:imgs('" + new_arr[j] +"','" + arr +"');\"><img src=images/photos/posts/m600x450m/"+ name + ".jpg /></a>";
           document.getElementById(name).className = "thumbnail_preview_active";
  }