function submit_demo_request() {  
 
	// validate and process form here   
	var firstname = $("#firstname").val();             
	var lastname = $("#lastname").val();  
	var email = $("#email").val();  
	var phone = $("#phone").val(); 
	var company = $("#company").val();             
	var industry = $("#industry").val();  
	var country = $("#country").val();  
	
	var proposal = $("#proposal").val(); 

	var calibration = $("#calibration").val(); 
	var num_of_cal_instruments = $("#num_of_cal_instruments").val();
	var num_of_cal_users = $("#num_of_cal_users").val();
	
	var maintenance = $("#maintenance").val(); 
	var num_of_maint_instruments = $("#num_of_maint_instruments").val();
	var num_of_maint_users = $("#num_of_maint_users").val();

	var message = $("#message").val(); 
	var error;

	var dataString = "firstname=" + firstname + "&lastname=" + lastname + "&email=" + email + "&phone=" + phone + "&company=" + company + "&industry=" + industry + "&country=" + country + "&proposal=" + proposal + "&calibration=" + calibration + "&num_of_cal_instruments=" + num_of_cal_instruments + "&num_of_cal_users=" + num_of_cal_users + "&maintenance=" + maintenance + "&num_of_maint_instruments="+ num_of_maint_instruments + "&num_of_maint_users=" + num_of_maint_users + "&message=" + message;  
	
	//alert(dataString);
	
	
	if(firstname == ""){ 		
		$("#error_firstname").fadeIn(700).show(); 
		$("#loading").fadeOut(100).hide(); 
		error = "true";
	}
	if(lastname == ""){ 
		$("#error_lastname").fadeIn(700).show(); 
		$("#loading").fadeOut(100).hide(); 
		error = "true";
	}
	if(email == ""){ 
		$("#error_email").fadeIn(700).show(); 
		$("#loading").fadeOut(100).hide(); 
		error = "true";
	}
	if(phone == ""){ 
		$("#error_phone").fadeIn(700).show(); 
		$("#loading").fadeOut(100).hide();	
		error = "true";
	}


	if(company == ""){ 		
		$("#error_company").fadeIn(700).show(); 
		$("#loading").fadeOut(100).hide(); 
		error = "true";
	}
	if(industry == "select"){ 
		$("#error_industry").fadeIn(700).show(); 
		$("#loading").fadeOut(100).hide(); 
		error = "true";
	}
	if(country == ""){ 
		$("#error_country").fadeIn(700).show(); 
		$("#loading").fadeOut(100).hide(); 
		error = "true";
	}
	
	//alert("no error");





	if (error == "true"){
		//alert("error");
		return false;
	}
	else {

		//alert("this");
		$.ajax({  
  			type: "POST",  
  			url: "http://www.compucalsolutions.com/website/wp/wp-content/themes/Custom_Theme/js/send.php",  
  			data: dataString,  
  			success: function() {  
  				$('#branding').fadeTo('slow', 0, function() {
    					$('#branding').html($('#demo_wrap2').html());
    				});
				$('#branding').fadeTo("slow",1); 
				//$('#message-sent').fadeIn(500).show();
				
    			}
		
		});
		
	}
	 
//alert("here");
}