function doSend(){
	if(!document.frmContact.txtRoepnaam.value){
		alert('Please fill in your name.');
		document.frmContact.txtRoepnaam.focus();
	}
	else if(!document.frmContact.txtLogin.value){
		alert('Please fill in your username');
		document.frmContact.txtLogin.focus();
	}
	else if(!document.frmContact.txtWachtwoord.value){
		alert('Please fill in your password');
		document.frmContact.txtWachtwoord.focus();
	}
	else if(!document.frmContact.txtEmail.value){
		alert('Please fill in your email address');
		document.frmContact.txtEmail.focus();
	}
	else if(!validateEmail(document.frmContact.txtEmail.value)){
		alert('Your email address is not valid');
		document.frmContact.txtEmail.select();
	}
	else{
		document.frmContact.cmdSend.disabled = true;
		document.frmContact.submit();
	}
}
			
function validateEmail(str) {
	var index = str.indexOf("@")
	if ( (index < 1) ||
		 (str.indexOf(".") < 1) ||
		 (str.indexOf("\"") > -1) ||
		 (str.indexOf("'") > -1) ||
		 (str.length < 5) ||
		 ((index > 2) && (str.indexOf("@", index+1) != -1)) )
			return false;
					
	return true;
}