// JavaScript Document
var count_anim_pic = 30;        
var cur_anim_pic = 1;       

var mask2_anim_pic=".jpg";

function change(id, mask_anim_pic)
{
id1 = id;
mask_anim_pic1 = mask_anim_pic;
var pic=document.getElementById("Myimg"+id);
cur_anim_pic++;
if ( cur_anim_pic > count_anim_pic )
{cur_anim_pic = 1;}
pic.src = mask_anim_pic + cur_anim_pic + mask2_anim_pic;
timer = setTimeout("change(id1,mask_anim_pic1)",1000);
}