function show_form(action)
{
	if(action == 'rent')
	{
		document.getElementById('show_form_rent').style.display='block';
		document.getElementById('show_right_rent').className='show_right_rent_selected';
		document.getElementById('show_form_send').style.display='none';
		document.getElementById('show_right_send').className='show_right_send';
	}
	if(action == 'send')
	{
		document.getElementById('show_form_rent').style.display='none';
		document.getElementById('show_right_rent').className='show_right_rent';
		document.getElementById('show_form_send').style.display='block';
		document.getElementById('show_right_send').className='show_right_send_selected';
	}
}