function change_image (obj){
     $(document).ready(function(){
	  	 $.each(photos, function (key,val) {
		  $(obj).append('<a href="'+val+'"><img src="'+key+'" alt="" /></a>');
		 })	
		 $(obj).innerfade({
			speed: 2000,
			timeout: 12000,
			type: 'random_start', //sequence
			containerheight: '220px'
		 });
	 });
}