function validate_form(){
	
		if ((document.sign.emailBox.value  == '') ||(document.sign.emailBox.value.indexOf('@') == -1)||(document.sign.emailBox.value.indexOf('.') == -1) ){
			alert("The email address field requires a valid entry.");
			document.sign.emailBox.focus();
			return false;
			}
		if (document.sign.passwordBox.value  == ''){
			alert("The password field requires an entry.");
			document.sign.passwordBox.focus();
			return false;
			}
				
}