var 
    img = new Array("4","7","11","12","15","17","19","27","31","32","36","38","45","47","51","57","59","64","69","70","73","75","78","79","85","108","112","114","115","123","130","132","136","138","139","171");

function randLomo(){
	var number, string;
	number = Math.floor(Math.random()*(img.length));
	string = "<img height='192' width='282' src='lomos/"+ img[number] + "b.jpg' name='BigLomo'>";
	document.write (string);
}