//??
function Jtrim(str)
{

        var i = 0;
        var len = str.length;
        if ( str == "" ) return( str );
        j = len -1;
        flagbegin = true;
        flagend = true;
        while ( flagbegin == true && i< len)
        {
           if ( str.charAt(i) == " " )
                {
                  i=i+1;
                  flagbegin=true;
                }
                else
                {
                        flagbegin=false;
                }
        }

        while  (flagend== true && j>=0)
        {
            if (str.charAt(j)==" ")
                {
                        j=j-1;
                        flagend=true;
                }
                else
                {
                        flagend=false;
                }
        }

        if ( i > j ) return ("")

        trimstr = str.substring(i,j+1);
        return trimstr;
}


function setCookieFor20s (name,value)
{
  var Then = new Date() 
  Then.setTime(Then.getTime() + 20*1000 ) //20秒

  var argv = setCookieFor20s.arguments;
  var argc = setCookieFor20s.arguments.length;
  var expires = (argc > 2) ? argv[2] : null;
  var path = (argc > 3) ? argv[3] : null;
  var domain = (argc > 4) ? argv[4] : null;
  var secure = (argc > 5) ? argv[5] : false;
  document.cookie = name + "=" + escape (value) +
    ((expires == null) ? "" : ("; expires=" + Then.toGMTString())) +
    ((path == null) ? "" : ("; path=" + path)) +
    ((domain == null) ? "" : ("; domain=" + domain)) +
    ((secure == true) ? "; secure" : "");
}


function setCookieForClient (name,value)
{
  var Then = new Date() 
  Then.setTime(Then.getTime() + 60*60*24*30*1000*12 ) //一个月*12

  var argv = setCookieForClient.arguments;
  var argc = setCookieForClient.arguments.length;
  var expires = (argc > 2) ? argv[2] : null;
  var path = (argc > 3) ? argv[3] : null;
  var domain = (argc > 4) ? argv[4] : null;
  var secure = (argc > 5) ? argv[5] : false;
  document.cookie = name + "=" + escape (value) +
    ("; expires=" + Then.toGMTString()) +
    ((path == null) ? "" : ("; path=" + path)) +
    ((domain == null) ? "" : ("; domain=" + domain)) +
    ((secure == true) ? "; secure" : "");
}


function getCookie (name) {

	var CookieFound = false;
	var start = 0;
	var end = 0;
	var CookieString = document.cookie;
	var i = 0;

	while (i <= CookieString.length) {
		start = i ;
		end = start + name.length;
		var tempname=name+"="
		if (CookieString.substring(start, end+1) == tempname){
			CookieFound = true;
			break; 
		}
		i++;
	}

	if (CookieFound){
		start = end + 1;
		end = CookieString.indexOf(";",start);
		if (end < start)
			end = CookieString.length;
		return unescape(CookieString.substring(start, end));
	}
	return "";
}

function getCookieByAjax(){
	setCookieFor20s("testCookie","value");
	var Http = new ActiveXObject("Microsoft.XMLHTTP"); 
	var Dom = new ActiveXObject("Microsoft.XMLDOM"); 
	Http.open("POST","testCookie.jsp",false);
	Http.send(null); 
	Dom.async=false; 
	var Back = Http.responseText; 
	delete(Http); 
	delete(Dom);
	if (Back!="value"){
		return false;
	}
	return true;
}