var isIE = (navigator.appName.substring(0,9)=='Microsoft');

var isNS = (navigator.appName=='Netscape');

var isNS4 = (isNS) && (parseInt(navigator.appVersion)==4);



var activeLayer = 0;



function findObject(idf, doc) { 

  var i,x;

	  

	if (!doc) doc=document;

  if (!(x=doc[idf]) && doc.all) x=doc.all[idf];

  for (i=0; !x && i<doc.forms.length; i++) x=doc.forms[i][idf];

  for (i=0; !x && doc.layers && i<doc.layers.length; i++) x=findObject(idf, doc.layers[i].document);

  if(!x && document.getElementById) x=document.getElementById(idf);

	

	return x;

}



function strVisibility(str) {

	return (str=='hide')?'hidden':((isNS4)?str:'visible');

}



function setVisibility(idf, str) {

  var lr = findObject(idf);

	if (lr) {

	  if (lr.style) lr = lr.style;

	  lr.visibility = strVisibility(str);

	};	

}



function displayMenu(items) {

		if (!items.length) return;

		

    var i=0, itm='', isSplit=false, len=0;



		document.write('<table width="100%" border="0" cellspacing="10" cellpadding="1">');

		

		for (i=0; i<items.length; i++) {

			 if (typeof(items[i])=='string') {

			 		itm = items[i];

					ref = 'javascript: showLayer('+(i+1)+')';

			 }

			 else if (typeof(items[i])=='object') {

			    itm = items[i][0];

					ref = items[i][1];

			 }

			 len = itm.length;

			 isSplit = ( itm.substring(len-1, len)==' ' );

			 

			 document.write('<tr><td id="item'+(i+1)+'" class="leftItem">');

			 document.write('<a href="'+ref+'">'+itm+'</a>');

			 document.write('</td></tr>');

			

			 if (isSplit) {

			 			document.write('<tr><td class="splitter">');

						document.write('<img src="images/trans.gif" width="1" height="1">');

						document.write('</td></tr>');

			 }

		}

		

		document.write('</table>');

}

 



function showLayer(n) {

		if (activeLayer) hideLayer(activeLayer);

		

		var divID = 'div' + n;

		var mnuItem = findObject('item' + n);

		setVisibility(divID, 'show');

		if (isIE && mnuItem) {	mnuItem.style.backgroundColor = 'rgb(255,220,220)'; }

		

		activeLayer = n;

		

		window.scrollTo(0,0);

}



function hideLayer(n) {

		var divID = 'div' + n;

		var mnuItem = findObject('item' + n);

		setVisibility(divID, 'hide');

		if (isIE && mnuItem) {	mnuItem.style.backgroundColor = ''; }

		

		activeLayer = 0;

}



function loadPage() {

	  showLayer(1);

}