function checkForTextById(id, desc)
{
	return checkForTextByObject(document.getElementById(id), desc);
}			
		
function checkForEmailAddressById(id)
{
	return checkForEmailAddressByObject(document.getElementById(id));
}
					
			
function checkForTextByObject(obj, desc)
{
	if ( obj != null)
	{
		if ( obj.value.length <= 0 )
			return '\n-- ' + desc;
		else return '';    
	}
	else
		return '';
}
			
function checkForEmailAddressByObject(obj)
{
	if ( obj != null )
	{
		var reEmail = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;
		if ( obj.value.length <= 0 )
			return '\n-- Email address is required';
		else if ( obj.value.search(reEmail) == -1 )
			return '\n-- Valid email address is required';
		else
			return '';
	}
	else
		return '';
}