//make a cookies
function setCookieValue(name,value,days)//name:cookie's name,value:cookies's value
{
	var exp = new Date();    
	exp.setTime(exp.getTime()+(days*24*60*60*1000));
    if (!days) { days=1;}
    document.cookie = name+"="+escape (value)+ ";expires=" + exp.toGMTString()+";path=/";  
}
function setCookie(name,value)
{
	setCookieValue(name,value,1);
}
function getCookie(name)//get the cookies
{
	var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
    if(arr != null) return unescape(arr[2]); return null;

}
function delCookie(name)//delete the cookie
{
	var exp = new Date();
	exp.setTime(exp.getTime() - 1);
	var cval=getCookie(name);
	if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString()+";path=/"; 
}


//-->