var newsletterAjax = function(){
		
		//check that browser supports ajax
		try{
	      // Firefox, Opera 8.0+, Safari
	        ajaxObject=new XMLHttpRequest();
	    }catch (e){
	        // Internet Explorer
	        try {
	            ajaxObject=new ActiveXObject("Msxml2.XMLHTTP");
	        }catch (e) {
	            try{
	                ajaxObject=new ActiveXObject("Microsoft.XMLHTTP");
	            }catch (e){
	                alert("Your browser does not support AJAX! Please upgrade to a standards compliant browser, such as Firefox, Safari, Opera or Internet Explorer 7");
	                return false;
	            }
	        }
	    }
		
		//when ajax call complete
		ajaxObject.onreadystatechange = function(){
			if(ajaxObject.readyState==4){
				if(ajaxObject.status == 200){
					//success!
					try {
						//do something with the response text
						alert(ajaxObject.responseText);
	
					} catch (e){
						return;
					}
				}
				else{
					//cannot reach php page
				}
				
				
			}
		}
		
		var pullValues = function(){
			
			var string = '';
			
			var newsletterEmail = escape(document.getElementById('newsletterEmail').value);
			
			return '?newsletterEmail='+newsletterEmail;
		}	
		
		ajaxObject.open("GET",newsletterSubmitUrl+pullValues(),true);
	
		ajaxObject.send(null);
	}