function _checkEntries(myForm) {
			if (myForm.name.value == "") { alert("Please enter your first name."); return false;}
			if (myForm.lastname.value == "") { alert("Please enter your last name."); return false;}
			if (myForm.address.value == "") { alert("Please enter your address."); return false;}
			if (myForm.email.value == "") { alert("Please enter your email address."); return false;}
			if (myForm.phone.value == "") { alert("Please enter your phone number."); return false;}
			if (myForm.mobile.value == "") { alert("Please enter your mobile number."); return false;}
			if (myForm.number.value == "") { alert("Please enter your code."); return false;}
			
			if ( _email_verify(myForm.email.value) == false ) {
				// check email validity
				alert("Your email address appears to be wrong. Please enter a valid email address.");
				return false;
			}
			
		}
		
		function _email_verify(str) {
			if(!str.match(/^[\w]{1}[\w\.\-_]*@[\w]{1}[\w\-_\.]*\.[\w]{2,6}$/i)) {
				return false;
			} else {
				return true;
			}
		
		}