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 E-mail")
		   return false
		}

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

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

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

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

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

 		 return true					
}

function ValidateEmail(){
	var emailID=document.getElementById('email');
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
 }
 
function ValidateEntry(){
	if(ValidateEmail()==false){
		return false;
	}
	else{
		valid = true;
		var firstName = window.document.forms['emailForm'].firstName.value;
		var lastName = window.document.forms['emailForm'].lastName.value;
		var message = window.document.forms['emailForm'].message.value;
		var subject = window.document.forms['emailForm'].subject.value;
		var alertMsg = "";
		if(!firstName){
			valid = false;
			alertMsg = alertMsg + "You must enter a First Name. ";
		}
		if(!lastName){
			valid = false;
			alertMsg = alertMsg + "You must enter a Last Name. ";
		}
		if(!subject){
			valid = false;
			alertMsg = alertMsg + "You must enter a Subject. ";
		}
		if(!message){
			valid = false;
			alertMsg = alertMsg + "You must enter a Message. ";
		}
		if(!valid){
			alert(alertMsg);
		}
		return valid;
	}
}

 var http_request = false;
   function makeRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      http_request.onreadystatechange = alertContents;
      http_request.open('GET', url + parameters, true);
      http_request.send(null);
   }

   function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById('replyspan').innerHTML = result; 
		clearForm();
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   
   function get(obj) {

	var firstName = window.document.forms['emailForm'].firstName.value;
	var lastName = window.document.forms['emailForm'].lastName.value;
	var company = window.document.forms['emailForm'].company.value;
	var email = window.document.forms['emailForm'].email.value;
	var subject = window.document.forms['emailForm'].subject.value;
	var message = window.document.forms['emailForm'].message.value;
	if(!company){company = "na";}
	
	var getstr = "?firstName=" + firstName + "&lastName=" + lastName + "&company=" + company+ "&email=" + email + "&subject=" + subject + "&message=" + message;

      makeRequest('email.php', getstr);
      
   }

function clearForm(obj){
	window.document.forms['emailForm'].firstName.value = "";
	window.document.forms['emailForm'].lastName.value = "";
	window.document.forms['emailForm'].company.value = "";
	window.document.forms['emailForm'].email.value = "";
	window.document.forms['emailForm'].subject.value = "";
	window.document.forms['emailForm'].message.value = "";
}