Javascript Cookie操作

 <script type="text/javascript">   
 function SetCookie(name,value,expire) {   
     var exp  = new Date();   
     exp.setTime(exp.getTime() + expire);   
     document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();   
 }   
   
 function getCookie(name) {   
     var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));   
     if(arr != null) return unescape(arr[2]); return null;   
 }   
   
 function delCookie(name){   
     var exp = new Date();   
     exp.setTime(exp.getTime() - 1);   
     var cval=getCookie(name);   
     if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();   
 }   
 </script>