// Cookies操作相关
function getCookie(objName)
{
    var str="1";
	var arrStr = document.cookie.split(";");
	for(var i = 0;i < arrStr.length;i ++)
	{
		var temp = arrStr[i].split("=");
		var cname = trim(temp[0]);
		if(cname == objName)
		{
		    str = unescape(temp[1]);
		    break;
		}
    }
    return str;
}

function writeCookie(name,value,hours)
{
  var expire = "";
  if(hours != null)
  {
    expire = new Date((new Date()).getTime() + hours * 3600000);
    expire = "; expires=" + expire.toGMTString();
  }
  document.cookie = name + "=" + escape(value) + expire;
}

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

//去左空格;
function ltrim(s){
return s.replace( /^\s*/, "");
}
//去右空格;
function rtrim(s){
return s.replace( /\s*$/, "");
}
//左右空格;
function trim(s){
return rtrim(ltrim(s));
}