var emailFilter = /^[a-zA-Z0-9]+[.|_|-]?[a-zA-Z0-9]+\@[a-zA-Z0-9]+[.|_|-]?[a-zA-Z0-9]+\.[a-zA-Z]{2,4}$/;
function trim(stringToTrim) {
	return stringToTrim.replace(/^\s+|\s+$/g,"");
}
function validateContact(v)
{	
	var name = document.getElementById('name');	
	if( name.value == "" ){		
		alert("Enter  Name");		
		name.focus();
		return false;
	}
		var mail = document.getElementById('email');	
	if( mail.value == "" ){		
		alert("Enter E-Mail Address");		
		mail.focus();
		return false;
	}
	else{
		if( !emailFilter.test(mail.value) ){
			alert("Invalid Email Address");
			mail.focus();
			return false;
		}
	}
	var notes = document.getElementById('comments');	
	if( notes.value == "" ){		
		alert("Enter Questions/Comments");		
		notes.focus();
		return false;
	}
}
function popup(link)
{  
    w=650;h=400;
	var winl = (screen.width-w)/2;
	var wint = (screen.height-h)/2;
	var settings  ='height='+h+',';
      settings +='width='+w+',';
      settings +='top='+wint+',';
      settings +='left='+winl+',';
      settings +='scrollbars='+scroll+',';
      settings +='resizable=yes';

	mywindow = window.open(link,"Window1",settings);
	
}

function validateUser(email)
{
var Email = trim(email)	;

if( Email == "" ){
	document.getElementById("email_message").innerHTML='<span class="error">Enter E-mail Address</span>';
	return ;
}
if( !emailFilter.test(Email) ){
	document.getElementById("email_message").innerHTML='<span class="error">Invalid E-mail Address</span>';
	return ;
}
		
var xmlhttp;
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else if (window.ActiveXObject)
  {
  // code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
else
  {
  alert("Your browser does not support XMLHTTP!");
  }
xmlhttp.onreadystatechange=function()
{
if(xmlhttp.readyState==4)
  {
	  if(xmlhttp.responseText == 1)
	  {
		document.getElementById("email_message").innerHTML='<span class="success">E-mail Address is available</span>';  
	  }
	  else
      {
		document.getElementById("email_message").innerHTML='<span class="error">E-mail Address is not available</span>';
	  }
  }
}
xmlhttp.open("GET","validate.php?u="+Email,true);
xmlhttp.send(null);
}