/**** 商品购物车对比栏 **************/
function setCookie(name, value) //cookies设置 
{ 
	var argv = setCookie.arguments; 
	var argc = setCookie.arguments.length; 
	var expires = (argc > 2) ? argv[2] : null; 
	if(expires!=null) 
	{ 
		var LargeExpDate = new Date (); 
		LargeExpDate.setTime(LargeExpDate.getTime() + (expires*1000*3600*24)); 
	} 
	document.cookie = name + "= " + escape(value)+';path=/'+((expires == null) ? " " : ( "; expires= " +LargeExpDate.toGMTString())); 
} 

function getCookie(name) //cookies读取 
{ 
	var search = name + "=" 
	if(document.cookie.length > 0) 
	{ 
		offset = document.cookie.indexOf(search);
		if(offset != -1) 
		{ 
			offset += search.length;
			end = document.cookie.indexOf( "; ", offset);
			if(end == -1) end = document.cookie.length;
			return unescape(document.cookie.substring(offset, end));
		} 
		else return ""; 
	} 
}