function getElementsByClassName(cl) {
				var retnode = [];
				var myclass = new RegExp('\\b'+cl+'\\b');
				var elem = this.getElementsByTagName('*');
				for (var i = 0; i < elem.length; i++) {
					var classes = elem[i].className;
					if (myclass.test(classes)) retnode.push(elem[i]);
				}
				return retnode;
			};
			document.getElementsByClassName = function(cl) {
				var retnode = [];
				var myclass = new RegExp('\\b'+cl+'\\b');
				var elem = this.getElementsByTagName('*');
				for (var i = 0; i < elem.length; i++) {
				var classes = elem[i].className;
				if (myclass.test(classes)) retnode.push(elem[i]);
				}
				return retnode;
			};
			
			function rerow(rows)
			{
				var tovars = document.getElementsByClassName('tovar');
			//alert('asd?');
				var imgs = document.getElementsByClassName('img_expand');
				//for(i = 0; i < tovars.length; ++i){			alert(tovars[i].innerHTML);			}
				var newWidth = 100/rows-1 + '%';
				var newHeight = 100/rows-1 + '%';
				//alert(newWidth);
				for(i = 0; i < tovars.length; ++i){
					tovars[i].style.width = newWidth;
				}
				var maxRows = 8;
				var imgWidth = 70 * maxRows/rows;
				var imgHeight = 70 * maxRows/rows;
				
				for(i = 0; i < imgs.length; ++i){
					
					imgs[i].innerHTML = '<IMG src="'+ imgs[i].href +'" width="'+ imgWidth +'" height="'+ imgHeight +'" border="0" style="border: #FFF 1px solid;">';
					
				}
				
				
				if (rows == 8){
					document.getElementById('head25').className = 'head25_active';
					document.getElementById('head50').className = 'head50_inactive';
					document.getElementById('head100').className = 'head100_inactive';
				}
				
				if (rows == 4){
					document.getElementById('head25').className = 'head25_inactive';
					document.getElementById('head50').className = 'head50_active';
					document.getElementById('head100').className = 'head100_inactive';
				}
				
				if (rows == 2){
					document.getElementById('head25').className = 'head25_inactive';
					document.getElementById('head50').className = 'head50_inactive';
					document.getElementById('head100').className = 'head100_active';
				}
			}