function hideSelects() {
		for(var m = 0; m < document.all.tags("SELECT").length; ++m) {
			document.all.tags("SELECT")[m].style.visibility='hidden';
		}
	}
	function showSelects() {
		for(var s = 0; s < document.all.tags("SELECT").length; ++s) {
			document.all.tags("SELECT")[s].style.visibility='visible';
		}
	}