/*
by niuyi 2009年5月14日
*/
function setCookie(name, value) 
{ 
    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)+((expires == null) ? "" : ("; expires=" +LargeExpDate.toGMTString())); 
}
function getCookie(Name) 
{ 
    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 "" 
     } 
} 
function deleteCookie(name) 
{ 
                     var expdate = new Date(); 
                      expdate.setTime(expdate.getTime() - (86400 * 1000 * 1)); 
     setCookie(name, "", expdate); 
} 
