function changeroom()
{
	// Get ID of Room clicked
	var RoomID = document.getElementById("roomslist").value;
	
	// Get ID of content for Room
	var RoomContentID = RoomID + "Content";
	
	//Change class of content for Room
	var RoomContentClass = document.getElementById(RoomContentID).className;
	
	// If Class is hidden...
	if (RoomContentClass == 'hidden')
	{
		// Get all Divs in page
			var arrAllDivs = document.getElementsByTagName('DIV');
			for(var i=0;i<arrAllDivs.length;i++)
			{
				// If div is visible, make hidden
				if(arrAllDivs[i].className=='visible')
				{
					arrAllDivs[i].className='hidden'
				}
			}
		// Change div to visible
		document.getElementById(RoomContentID).className='visible'
	}
	
	
		
}