// JavaScript Document
var emailRegEx = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;

function checkcontactusform(){
	var email = document.getElementById('email').value;
	
	if(document.getElementById('cusname').value == ''){
		alert('Please fill in your name.');
		return false;
	}//end if	
	else if(email.search(emailRegEx) == -1){
		 alert('Please fill in your valid e-mail address.');
		return false;
	}//end else if
	else if(document.getElementById('subject').value == ''){
		alert('Please fill in your subject.');
		return false;	
	}
}