var pre,post;
if(document.layers){pre='document.'; post='';}
if(document.getElementById){pre='document.getElementById("'; post='").style';}
if(document.all){pre='document.all.'; post='.style';}
var currLayer = 'initLayer';
var currPhoto = 'initPhoto';
var currLayerSub  = 'initLayerSub';
var currImage  = 'initImage';
function hideLayer(currLayer){eval(pre + currLayer + post).display='none';}
function showLayer(newLayer){if(eval(pre + newLayer + post).display != 'none') eval(pre + newLayer + post).display = 'none'; else(eval(pre + newLayer + post).display = '');}
function showLayerSub(newLayer){hideLayer(currLayerSub); eval(pre + newLayer + post).display = ''; currLayerSub=newLayer;}
function showLayerh(newLayer){hideLayer(currLayer); eval(pre + newLayer + post).display = ''; currLayer=newLayer;}
function showPhoto(newPhoto){hideLayer(currPhoto); eval(pre + newPhoto + post).display = ''; currPhoto=newPhoto;}