function feature() {
	switch(Math.floor(Math.random()*7)) {
		case 0:document.getElementById("im").src = "/index.jpg";break;
		case 1:document.getElementById("im").src = "/index1.jpg";break;
		case 2:document.getElementById("im").src = "/index2.jpg";break;
		case 3:document.getElementById("im").src = "/index3.jpg";break;
		case 4:document.getElementById("im").src = "/index4.jpg";break;
		case 5:document.getElementById("im").src = "/index5.jpg";break;
		case 6:document.getElementById("im").src = "/index6.jpg";break;
	}
}