function getEvent(){
    if(document.all){
        return window.event;// ie
    }
    func=getEvent.caller;
    while(func!=null){
        var arg0=func.arguments[0];
        if(arg0){
            if((arg0.constructor==Event || arg0.constructor ==MouseEvent)
            ||(typeof(arg0)=="object" && arg0.preventDefault && arg0.stopPropagation)){
                return arg0;
        }
    }
    func=func.caller;
    }
    return null;
}


//By Mahongtao Begin
function queryString(url,k)
{
    url=url.split('?')[1];
    
    if(url)
    {
        if(url.indexOf('#')>0)
            url=url.substring(0,url.indexOf('#'));
            
        var k_v=url.split('&');
        
        for(i=0;i<k_v.length;i++)
        {
            var temp=k_v[i].split('=');
            
            if(temp[0]==k)
            {
                return temp[1];
                break;
            }
        }
    }
    
    return '';
}

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 readCookie(name)

{

  var cookieValue = "";

  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;

      cookieValue = unescape(document.cookie.substring(offset, end))

    }

  }

  return cookieValue;

}

//By Mahongtao End