onload = function() {
	var ee, ii = 0;
	while (ee = document.getElementById('gallery').getElementsByTagName ('DIV') [ii++]) {
		if (ee.className == 'on' || ee.className == 'off') {
		ee.onclick= function () {
			var getEls = document.getElementsByTagName('DIV');
				for (var zz=0; zz<getEls.length; zz++) {
				getEls[zz].className=getEls[zz].className.replace('look', 'hide');
				getEls[zz].className=getEls[zz].className.replace('on', 'off');
				}
			this.className = 'on';
			var max = this.getAttribute('titl');
			document.getElementById(max).className = "look";
			}
		}
	}
}