function checkForm(){
	var error=0;
	var name=document.getElementById('fullname').value;
	var companyName=document.getElementById('company_name').value;
	var contactNo=document.getElementById('contact_no').value;
	var EmailAddress=document.getElementById('email_address').value;
	var stiffener=document.getElementById('stiffener').checked;
	var hpts=document.getElementById('test_sockets').checked;
	var precision=document.getElementById('precision').checked;
	var conversion=document.getElementById('conversion').checked;
	var mqa=document.getElementById('mqa').checked;
	var message=document.getElementById('message').value;
	
	
	var errorMessage="";
	
	var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;

	if(name==""){
		error=1;
		errorMessage+="Please key in your name.\n";
		document.getElementById('fullname').style.borderColor='#e98201';
	}else{
		document.getElementById('fullname').style.borderColor='black';
	}

	if(companyName==""){
		error=1;
		errorMessage+="Please key in your company name.\n";
		document.getElementById('company_name').style.borderColor='#e98201';
	}else{
		document.getElementById('company_name').style.borderColor='black';
	}

	if(contactNo==""){
		error=1;
		errorMessage+="Please key in contact number.\n";
		document.getElementById('contact_no').style.borderColor='#e98201';
	}else{
		document.getElementById('contact_no').style.borderColor='black';
	}

	if(EmailAddress==""){
		error=1;
		errorMessage+="Please key in your email address.\n";
		document.getElementById('email_address').style.borderColor='#e98201';
	}else{
		if(reg.test(EmailAddress) == false){
			error=1;
			errorMessage+="Please key in an vaild email address.\n";
			document.getElementById('email_address').style.borderColor='#e98201';
		}else{
			document.getElementById('email_address').style.borderColor='black';
		}
	}
	
	
	
	if(stiffener==false&&hpts==false&&precision==false&&conversion==false&&mqa==false&&message==""){
		error=1;
		errorMessage+="Please choose at least 1 type of product or key in the message.\n";
	}
	
	if(error==0){
		return true;
	}else{
		window.alert(errorMessage);
		return false;
	}
}