function call_back_request()			
{
	var first_name=document.getElementById('first_name').value;	
	var last_name=document.getElementById('last_name').value;	
	var phone=document.getElementById('phone').value;	
	var interest=document.getElementById('interest').value;	
	//						
	if(first_name!="" && last_name !="" && phone!="" && interest!=""){

		var xmlhttp;					
		try{					
			xmlhttp=new XMLHttpRequest();					
		} 					
		catch(e){
			try{
				xmlhttp=new ActiveXObject("Msxml2.XMLHTTP");					
			}
			catch(e){
				try{
					xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");										
				}
					catch(e){
						alert("AJAX Not Supported");
					}
				}
			}
		xmlhttp.onreadystatechange=function(){
			if(xmlhttp.readyState!=4){												
				var display=document.getElementById('call-back-request');													display.innerHTML="<br /><img src='images/ajax_loader.gif' />";

			}																				if(xmlhttp.readyState==4){										
				var display=document.getElementById('call-back-request');									
				display.innerHTML=xmlhttp.responseText;															
			}								
		}												
		var url="/submit-call-back-request.php";				data="first_name="+URLEncode(first_name)+"&last_name="+URLEncode(last_name)+"&phone="+URLEncode(phone)+"&interest="+URLEncode(interest);
		if (xmlhttp) {
			// alert (url +"?"+ data);
			// xmlhttp.onreadystatechange=xmlhttpChange;
			xmlhttp.open("POST",url,true);
			xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
			xmlhttp.send(data);
		}										
		}else{
			alert("Please fill out all required fields");
		}			
}