function roPointer(status)
{
	if(status == "over")
	{
		document.body.style.cursor = "pointer";
	
	} else {
		
		document.body.style.cursor = "default";
	}
}

function switchImg(imgNum)
{
				
	if(imgNum == "0")
	{
		for(i=1; i <=13; i++)
		{
			var poiName = "poi" + i;
						 
			var e = document.getElementById(poiName);
			e.style.background = "none";
			e.style.color = "#000000";
		}
					
	} else {
		var poiName = "poi" + imgNum;
		var e = document.getElementById(poiName);
		e.style.background = "#000000";
		e.style.color = "#ffffff";
	}
				
	document.overlay.src = "/_images/poi_map_ol" + imgNum + ".png";
				
}