var xmlHttp
function validate_email(myForm)
{ 
 var str=myForm.email_address.value
 var filter=/^.+@.+\..{2,3}$/
 if (filter.test(str))
	{
			return(true);
	}
	else
	{
		var num1="<font color=#FF0000 size=-1 face=Arial, Helvetica, sans-serif>Please enter your e-mail address.</font>";

		document.getElementById("error_email_address").innerHTML= num1;
		return (false)
	}
}


function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
  		
		alert( xmlHttp.responseText);
		document.getElementById("error_email_address").innerHTML= stringhtml
 } 
}function GetXmlHttpObject()
{
var xmlHttp=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp=new XMLHttpRequest();
 }
catch (e)
 {
 //Internet Explorer
 try
  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}