function roll_over(img_name, img_src)
{
	// Get current filename in url
	// Ex: index.htm
	var filename = jQuery.url.attr("file");
	if (jQuery.url.attr("query") != null){
		filename = filename + "?" + jQuery.url.attr("query")
	}
	
	if ( filename == null) {
		filename = "index.html";
	}
	
	// Neu dang la cac file index.html, news, sitemap thi kg thuc hien viec rollover image
	if (filename =="index.html" && img_name=="icHome" || filename=='index.php?u=readsimpledata,contact,container-LEFT' && img_name=="icEmail" || filename =="sitemap.html" && img_name=="icSitemap")
	{
		return;
	}
	
	document[img_name].src = img_src;
	document[img_name].alt = 'img_src';

}
   
   function CheckInput()
{
	if(document.forms["frmSend"].elements["tbxname"].value=="")
	{
		alert("Please put your name!");
		//frmSend.tbxname.focus();
		document.forms["frmSend"].elements["tbxname"].focus();
		return false;
	}
	
	if(!isEmail(document.forms["frmSend"].elements["tbxemail"].value))
	{
		alert("Please correct your email!");
		//frmSend.tbxemail.focus();
		document.forms["frmSend"].elements["tbxemail"].focus();
		return false;		
	}
	
	if(document.forms["frmSend"].elements["txtaihre"].value=="")
	{
		alert("Please put your ihre nachricht!");
		//frmSend.txtaihre.focus();
		document.forms["frmSend"].elements["txtaihre"].focus(); //dung the nay de chay tren ca IE va FF
		return false;
	}
			
  return true;  
}

function isEmail(s)
{   
  if (s=="") return false;
  if(s.indexOf(" ")>0) return false;
  if(s.indexOf("@")==-1) return false;
  var i = 1;
  var sLength = s.length;
  if (s.indexOf(".")==-1) return false;
  if (s.indexOf("..")!=-1) return false;
  if (s.indexOf("@")!=s.lastIndexOf("@")) return false;
  if (s.lastIndexOf(".")==s.length-1) return false;
  var str="0123456789abcdefghikjlmnopqrstuvwxyz-@._"; 
  for(var j=0;j<s.length;j++)
	{
		if(str.indexOf(s.charAt(j))==-1) return false;
	}
  return true;
}