// Checks if a field is empty, and if so, resets the input's content to the default value
function checkField( obj, value )
{
	// Match any amount of white spaces
	if( obj.value == "" )
	{
		obj.value = value;
	}
	
	return false;
}

// Clears an input's content
function clearField( obj, value )
{
	if( obj.value == value )
	{
		obj.value = "";
	}
	
	return false;
}