NS4 = (document.layers) ? 1 : 0;
     IE4 = (document.all) ? 1 : 0;
     ver4 = (NS4 || IE4) ? 1 : 0;

     if (ver4) {
         with (document) {
             write("<STYLE TYPE='text/css'>");
             if (NS4) {
                 write(".parent {position:absolute; visibility:visible}");
                 write(".child {position:absolute; visibility:visible}");
                 write(".regular {position:absolute; visibility:visible}")
             }
             else {
                 write(".child {display:none}")
             }
             write("</STYLE>");
         }
     }

     isExpanded = false;

     function getIndex(el) {
         ind = null;
         for (i=0; i<document.layers.length; i++) {
             whichEl = document.layers[i];
             if (whichEl.id == el) {
                 ind = i;
                 break;
             }
         }
         return ind;
     }

     function arrange() {
         nextY = document.layers[firstInd].pageY + document.layers[firstInd].document.height;
         for (i=firstInd+1; i<document.layers.length; i++) {
             whichEl = document.layers[i];
             if (whichEl.visibility != "hide") {
                 whichEl.pageY = nextY;
                 nextY += whichEl.document.height;
             }
         }
     }

     function initIt(){
         if (!ver4) return;
         if (NS4) {
             for (i=0; i<document.layers.length; i++) {
                 whichEl = document.layers[i];
                 if (whichEl.id.indexOf("Child") != -1) whichEl.visibility = "hide";
             }
             arrange();
         }
         else {
             divColl = document.all.tags("DIV");
             for (i=0; i<divColl.length; i++) {
                 whichEl = divColl(i);
                 if (whichEl.className == "child") whichEl.style.display = "none";
             }
         }
     }

     function expandIt(el) {
         if (!ver4) return;
         if (IE4) {
             whichEl = eval(el + "Child");
             whichIm = event.srcElement;
             if (whichEl.style.display == "none") {
                 whichEl.style.display = "block";
                 whichIm.src = "triUp.gif";        
             }
             else {
                 whichEl.style.display = "none";
                 whichIm.src = "triDown.gif";
             }
         }
         else {
             whichEl = eval("document." + el + "Child");
             whichIm = eval("document." + el + "Parent.document.images['imEx']");
             if (whichEl.visibility == "hide") {
                 whichEl.visibility = "show";
                 whichIm.src = "triUp.gif";
             }
             else {
                 whichEl.visibility = "hide";
                 whichIm.src = "triDown.gif";
             }
             arrange();
         }
     }

     function expandAll() {
         if (!ver4) return;
         newSrc = (isExpanded) ? "triDown.gif" : "triUp.gif";

         if (NS4) {
             document.images["imEx"].src = newSrc;
             for (i=firstInd; i<document.layers.length; i++) {
                 whichEl = document.layers[i];
                 if (whichEl.id.indexOf("Parent") != -1) {
                     whichEl.document.images["imEx"].src = newSrc;
                 }
                 if (whichEl.id.indexOf("Child") != -1) {
                     whichEl.visibility = (isExpanded) ? "hide" : "show";
                 }
             }

             arrange();
             if (isExpanded) scrollTo(0,document.layers[firstInd].pageY);
         }
         else {
             divColl = document.all.tags("DIV");
             for (i=0; i<divColl.length; i++) {
                 if (divColl(i).className == "child") {
                     divColl(i).style.display = (isExpanded) ? "none" : "block";
                 }
             }
             imColl = document.images.item("imEx");
             for (i=0; i<imColl.length; i++) {
                 imColl(i).src = newSrc;
             }
         }
         
         isExpanded = !isExpanded;
     }

     onload = initIt;