function addtocart() {
		$len = document.buyform.size.length;
		$chosen = false;
		
		if ($len) {
			for ($i = 0; $i < $len; $i++) {
				if (document.buyform.size[$i].checked) {
					$chosen = document.buyform.size[$i].value;
				}
			}
		} else {
			if (document.buyform.size.checked) {$chosen = document.buyform.size.value;}
		}
			
		if (!$chosen) {
			alert('Please select a size...');
			document.getElementById("tl_size").style.color='#22a8ff';		
			document.getElementById("buyform").style.backgroundColor='#effbff';		
		} else {
			document.buyform.submit();
		}
	}
	
	function change_prod_img(img, fn) {
		img.src = fn;
	}


	function change_prod_img3(img, fn) {
		img.src = fn;
		if (img.height > 455) { img.height = "600"; }
	}

	function switch_page (page) {
		location.href='/product.php?item=' + page;
	}

	function highlight_item(item_id) {
		document.getElementById(item_id).style.backgroundColor='#e8e8e8';
	}

	function highlight_item_off(item_id) {
		document.getElementById(item_id).style.backgroundColor='#ffffff';
	}
	
	function unset_size_style() {
		document.getElementById("buyform").style.backgroundColor='transparent';
		document.getElementById("tl_size").style.color='#56565f';	
	}	
	
	img = new Image();
	img.src = "<? echo $pfile_a; ?>";
	document.main_a = img;