function switch_views(selection) {
		for (var i = 0, selection_exists = true; selection_exists; i++) {
			var s = document.getElementById("view_" + i);
			
			if (s) {
				s.className = "hide_block";
			}
			else {
				selection_exists = false;
			}
		}
		
		document.getElementById(selection).className = "show_block";
	}