function submit_enquiry() {
	//enquiryRequest = createRequest();
	var name  = document.getElementById("name").value;
	var phone  = document.getElementById("phone").value;
	var email  = document.getElementById("email").value;
	var enquiry  = document.getElementById("enquiry").value;
	var url = "mailenquiry.php";
	document.getElementById("ajax-loader").style.visibility="visible";
	document.getElementById("ajax-loader").style.paddingLeft="128px";
	document.getElementById("phone").disabled=true;
	document.getElementById("name").disabled=true;
	document.getElementById("submit_enquiry").disabled=true;
	document.getElementById("email").disabled=true;
	document.getElementById("enquiry").disabled=true;
	//alert(name + phone + email + enquiry);
	enquiryRequest.open("POST", url, true);
	enquiryRequest.onreadystatechange = updateEnquiryPanel;
	enquiryRequest.setRequestHeader("Content-Type",
							 "application/x-www-form-urlencoded");
	enquiryRequest.send("name=" + escape(name) + "&phone=" + escape(phone) + "&email=" + escape(email) + "&enquiry=" + escape(enquiry));
	
	
}


function validate_form()
{
	// Get form element values
	var name  = document.getElementById("name").value;
	var phone  = document.getElementById("phone").value;
	var email  = document.getElementById("email").value;
	var enquiry  = document.getElementById("enquiry").value;
	
	// Reset border colour of form elemnts to GREY
	document.getElementById("name").style.border="solid 1px #A5A5A5";
	document.getElementById("phone").style.border="solid 1px #A5A5A5";
	document.getElementById("email").style.border="solid 1px #A5A5A5";
	document.getElementById("enquiry").style.border="solid 1px #A5A5A5";
	
	
	var valid = true;
	
	if (name == null || name=="") 	{
		valid = false;
		document.getElementById("name").style.border="solid 1px #FF0000";
		
	}		
	if (phone == null || phone==""){		
		valid = false;
		document.getElementById("phone").style.border="solid 1px #FF0000";
	}
	if (email == null || email== "" || echeck(email)==false){		
		valid = false; 
		document.getElementById("email").style.border="solid 1px #FF0000";
	}
	if (enquiry == null || enquiry=="") {
		valid = false;
		document.getElementById("enquiry").style.border="solid 1px #FF0000";
	}
	
	// Finally check if form is valid and submit
	if (valid == true)
	{
		submit_enquiry();	
	}


}

function close_overlay()
{
	
	var overlay = document.getElementById("overlay");
	overlay.style.display = 'none';

}

function open_overlay()
{
	document.getElementById("phone").disabled=false;
	document.getElementById("name").disabled=false;
	document.getElementById("email").disabled=false;
	document.getElementById("enquiry").disabled=false;
	document.getElementById("submit_enquiry").disabled=false;
	document.getElementById("ajax-loader").style.visibility="hidden";
	var overlay = document.getElementById("box_received");
	overlay.style.display = 'none';
	var overlay = document.getElementById("overlay");
	overlay.style.display = 'block';
	var overlay = document.getElementById("box");
	overlay.style.display = 'block';
}


function updateEnquiryPanel(){
	if (enquiryRequest.readyState == 4) {
		
		if (enquiryRequest.status == 200) {

			var overlay = document.getElementById("box_received");
			overlay.style.display = 'block';
			var overlay = document.getElementById("box");
			overlay.style.display = 'none';
			enquiryRequest = createRequest();

			
		}
	}
}

function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid Email Address")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid Email Address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid Email Address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid Email Address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid Email Address")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid Email Address")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid Email Address")
		    return false
		 }

 		 return true					
	}