function gen_rand()
{
	
	for(var i=1;i<=6;i++)
	{
		var ran_unrounded=Math.random()*6;
		var ran_number=Math.floor(ran_unrounded); 
	//	alert(ran_number);
		document.getElementById('im'+i).src = "image_change/"+ran_number+".jpg";
	}
}