function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_showHideLayers() { //v6.0
  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; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
	
  updateOverGraphic();
}

function updateOverGraphic() {
				var URLArray = document.URL.split('/');

				var filenamePlusRequestString = URLArray[URLArray.length - 1];
				var filenamePlusRequestArray = filenamePlusRequestString.split('?');
				var filenamePlusAnchorString;
				if (filenamePlusRequestArray.length > 1) {
					filenamePlusAnchorString = filenamePlusRequestArray[filenamePlusRequestArray.length - 2];
					}
				else {
					filenamePlusAnchorString = filenamePlusRequestArray[filenamePlusRequestArray.length - 1];
					}

				var filenamePlusAnchorArray = filenamePlusAnchorString.split('#');
				var filename;
				if (filenamePlusAnchorArray.length > 1) {
					filename = filenamePlusAnchorArray[filenamePlusAnchorArray.length - 2];
					}
				else {
					filename = filenamePlusAnchorArray[filenamePlusAnchorArray.length - 1];
					}
				
				// alert("Filename: " + filename);
				
		  		switch (filename) {
		  			case 'index.html':
		  			case 'abouttheeuphrat.html':
		  			case 'theneweuphrat.html':
		  			case 'missionandhistory.html':
		  			case 'staffandboard.html':
		  			case 'supporters.html':
		  				document['about'].src = "images/navbar/NavBarAboutOver.gif";
		  				break;
		  			case 'inthemuseum.html':
		  			case 'pasthighlights.html':
		  			case 'studentshows.html':
		  				document['exhibitions'].src = "images/navbar/NavBarExhibitionsOver.gif";
		  				break;
		  			case 'artsandschools.html':
		  			case 'studentsinternsandoutreach.html':
		  			case 'artsandleadershippresentations.html':
		  			case 'collaborations.html':
		  				document['programs'].src = "images/navbar/NavBarProgramsOver.gif";
		  				break;
		  			case 'museumhours.html':
		  			case 'donate.html':
		  				document['visitjoinus'].src = "images/navbar/NavBarVisitJoinUsOver.gif";
		  				break;
					 default :
					 // alert("No match");
				}
}