if(document.layers){pre='document.'; post='';}
if(document.getElementById){pre='document.getElementById("'; post='").style'; post1='").setAttribute("class","layerVisited")';}
if(document.all){pre='document.all.'; post='.style'; post1='.class';}
var currLayer  = 'initLayer';
function hideLayer(currLayer){
	eval(pre + 'lnk'+currLayer + post).color = layerVisited;
	eval(pre + currLayer + post).display='none';
}
function showLayer(newLayer){
	if(eval(pre + newLayer + post).display != 'none') {
		eval(pre + 'lnk'+newLayer + post).color = layerVisited;
		eval(pre + newLayer + post).display = 'none';
	} else {
		eval(pre + newLayer + post).display = '';
		eval(pre + 'lnk'+newLayer + post).color = layerActive;
	}
}
function showLayerh(newLayer){hideLayer(currLayer); showLayer(newLayer); currLayer=newLayer;}