var xmlHttp

function submitform()
{
	
	if (this.validateform()) {			
		
		var name = document.getElementById('name').value;
		var emailadd = document.getElementById('emailadd').value;
   		var comments = document.getElementById('comments').value;
		showSpinner();		
	
		xmlHttp=GetXmlHttpObject();
	
			if (xmlHttp==null)
			{
				alert ("Browser does not support HTTP Request");
				return
			}
		
		var url="submitform.php"		
		url=url+"?action=sendmail"
		url=url+"&name="+name+"&emailadd="+emailadd+"&comments="+comments
		url=url+"&sid="+Math.random()				
		xmlHttp.onreadystatechange=stateChanged 
		xmlHttp.open("GET",url,true)
		xmlHttp.send(null)	
	
	}
	
	//return valid;	
}

function stateChanged() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	 { 	 
		 document.getElementById("txtsubmitstatus").innerHTML=xmlHttp.responseText 
		 hideSpinner();
		 clearform();
	 } 
}
	
function GetXmlHttpObject()
{
	var xmlHttp=null;
	try
		{
	 	xmlHttp=new XMLHttpRequest(); // Firefox, Opera 8.0+, Safari
	 	}
	catch (e)
		{ //Internet Explorer
	 
			try
	  			{
	  				xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
	  			}
	 		catch (e)
	  			{
	  				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
	  			}
	 	}
	return xmlHttp;
}
	
	
function showSpinner()
{
	document.getElementById("spinner").style.visibility='visible';
}
	
function hideSpinner()
{
	document.getElementById("spinner").style.visibility='hidden';
}
	
function validateform() { //handle login action

	var name = document.getElementById('name');
	var emailadd = document.getElementById('emailadd');	
	var comments = document.getElementById('comments');	
	
	var valid = true;	
	var validemail = true;
	
	if (name.value == '' || name.value == null) {
		//document.getElementById('lblStatus').innerHTML = '* All fields are required.';
		valid = false;
	}
	
	
	if (emailadd.value != '' || emailadd.value != null) { 
		var regex = new RegExp('[\\w\\.-]+(\\+[\\w-]*)?@([\\w-]+\\.)+[\\w-]+'); //email validation			
		if (!emailadd.value.match(regex)) {		
			validemail = false;
			valid = false;			
		}
	} else {
		valid = false;
	}
	
	if (comments.value == '' || comments.value == null) {
		//document.getElementById('lblStatus').innerHTML = '* All fields are required.';
		valid = false;
	}

	if (valid == false) {
		if (validemail == false) {
			document.getElementById('lblStatus').innerHTML = '* Please enter a valid email.';	
		} else {
			document.getElementById('lblStatus').innerHTML = '* All fields are required.';	
		}
	} else {
		document.getElementById('lblStatus').innerHTML = '';
	}
	
	return valid;
	
}

function clearform() {
	
	document.getElementById('name').value = '';
	document.getElementById('emailadd').value = '';
	document.getElementById('comments').value = '';
	
}