function loginOnload(){
	var btnLogin = document.getElementById("btnLogin");	
	btnLogin.onclick = lastCheck;
	
	document.getElementById("txtUserName").focus();
	
	var frmLogin = document.getElementById("frmLogin");
	frmLogin.action = HOME + "/loginCheck";	
	frmLogin.method = "post";
	frmLogin.onsubmit = function() {
		return false;
	}
	
	//amalia 070824
	pngfix();

	
}

function lastCheck(){
	var userName =	document.getElementById("txtUserName").value;

	if (!(userName==null))
		userName = TrimString(userName);		

	if ((userName == null)||(userName == "")){
		alert("Please input user name!");
		document.getElementById("txtUserName").focus();		
		return false;		
		}	
	else
	{
		var pwd = hex_md5(document.getElementById("txtPwd").value);	
		var url = HOME + "/loginCheck?userName=" + userName + "&pwd=" + pwd;
		var ajax = new AJAXInteraction(url, userValidate, null);
		ajax.doGetXML();
	}	
}

function userValidate(responseXML){
	var success = responseXML.getElementsByTagName("success")[0];
		
	if (success){
		var frmLogin = document.getElementById("frmLogin");			
		frmLogin.submit();
	}
	else {
		alert(responseXML.getElementsByTagName("error")[0].firstChild.data);
		document.getElementById("txtUserName").focus();
	}
}


//070824 png fix for ie
function pngfix() {

  var arVersion = navigator.appVersion.split("MSIE")
	var version = parseFloat(arVersion[1])

	if ((version >= 5.5) && (document.body.filters)) 
	{
   for(var i=0; i<document.images.length; i++)
   {
      var img = document.images[i]
      var imgName = img.src.toUpperCase()
      if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
      {
         var imgID = (img.id) ? "id='" + img.id + "' " : ""
         var imgClass = (img.className) ? "class='" + img.className + "' " : ""
         var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
         var imgStyle = "display:inline-block;" + img.style.cssText 
         if (img.align == "left") imgStyle = "float:left;" + imgStyle
         if (img.align == "right") imgStyle = "float:right;" + imgStyle
         if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
         var strNewHTML = "<span " + imgID + imgClass + imgTitle
         + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
         + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
         + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
         img.outerHTML = strNewHTML
         i = i-1
      }
   	}
	}

}