function setTab(tabName){
	document.getElementById("tabDesc").className = "";
	document.getElementById("tabSpecs").className = "";
	document.getElementById("tabPhotos").className = "";
	document.getElementById('layerDesc').style.display = 'none';
	document.getElementById('layerSpecs').style.display = 'none';
	document.getElementById('layerPhotos').style.display = 'none';
	
	document.getElementById("tab"+tabName).className = "selected";
	document.getElementById('layer'+tabName).style.display = 'block';
}