function selectRoom(nr) {


	var room = "room"+nr;
	var cb = "cb"+nr;
	
	var temp  = document.roomForm.elements[room].value;
	

	if(document.roomForm.elements[room].value == 0 && document.roomForm.elements[cb].checked ) 
		{ 	
			document.roomForm.elements[cb].click();
			document.roomForm.elements[room].value = temp;
		}
	
	else if(document.roomForm.elements[room].value != 0 && !document.roomForm.elements[cb].checked ) 
		{
			document.roomForm.elements[cb].click();
			document.roomForm.elements[room].value = temp;
		}

}

function clickRoom(nr) {

	var room = "room"+nr;

    if(document.roomForm.elements[room].value != 0 ) document.roomForm.elements[room].value = 0;
	else if(document.roomForm.elements[room].value == 0 ) document.roomForm.elements[room].selectedIndex = 1;
	
}