function checksearch()
{
	var obj = document.getElementById('searchtxt');
	var txt = obj.value;
	//alert(txt);
	if(txt == '' || txt == 'Search here')
	{
		alert('Search Text should not be empty.');
		obj.focus();
		return false;
	}
	else
	{
		window.location.href="/search.php?searchtxt="+txt;
	}
	return true;
}

function newsletter_check()
{
	if(document.frm_nl.news_email.value=='')
	{
		alert("Please enter email address.");
		document.frm_nl.news_email.focus();
		return false;
	}
	else if(document.frm_nl.news_email.value!='')
	{
		if(!validateEmail(document.frm_nl.news_email.value))
		{
			alert("Please enter valid email address.");
			document.frm_nl.news_email.focus();
			return false;
		}	
		
	}
	return true;
}

function login_check()
{

	if(document.frm_login.email.value=='')
	{
		alert("Please enter email address.");
		document.frm_login.email.focus();
		return false;
	}

	else if(document.frm_login.email.value!='')
	{
		if(!validateEmail(document.frm_login.email.value))
		{
			alert("Please enter valid email address.");
			document.frm_login.email.focus();
			return false;
		}	
		
	}
	 if(document.frm_login.password.value=='')
	{
		alert("Please type your password");
		document.frm_login.password.focus();
		return false;
	}
	return true;
}

function validateEmail(email)
{
// a very simple email validation checking. 
// you can add more complex email checking if it helps 
    if(email.length == 0)
	{
	  return true;
	}
    var splitted = email.match("^(.+)@(.+)$");
    if(splitted == null) return false;
    if(splitted[1] != null )
    {
      var regexp_user=/^\"?[\w-_\.]*\"?$/;
      if(splitted[1].match(regexp_user) == null) return false;
    }
    if(splitted[2] != null)
    {
      var regexp_domain=/^[\w-\.]*\.[A-Za-z]{2,4}$/;
      if(splitted[2].match(regexp_domain) == null) 
      {
	    var regexp_ip =/^\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\]$/;
	    if(splitted[2].match(regexp_ip) == null) return false;
      }// if
      return true;
    }
return false;
}