var img_arr = new Array(
"images/for_ind/1.jpg",
"images/for_ind/2.jpg",
"images/for_ind/3.jpg",
"images/for_ind/4.jpg",
"images/for_ind/5.jpg",
"images/for_ind/6.jpg");

var comm_arr = new Array(
"","","","","","");

var i = Math.floor(Math.random() * img_arr.length);