function showlayer(whichLayer){document.getElementById(whichLayer).style.display='block';}
function hidelayer(whichLayer){document.getElementById(whichLayer).style.display='none';}
function MM_showHideLayers(){var i,p,v,obj,args=MM_showHideLayers.arguments;for(i=0;i<(args.length-2);i+=3)
if((obj=MM_findObj(args[i]))!=null)
{v=args[i+2];if(obj.style)
{obj=obj.style;var display=(v=='show')?'block':(v=='hide')?'none':v
v=(v=='show')?'visible':(v=='hide')?'hidden':v;}
if(BrowserDetect.browser=='Firefox')
{obj.position='fixed';}
obj.visibility=v;obj.display=display;}}