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>"); 
           } 
} 
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"); 
        if (whichEl.style.display == "none") { 
            whichEl.style.display = "block"; 
        } 
        else { 
            whichEl.style.display = "none"; 
        } 
    } 
    else { 
        whichEl = eval("document." + el + "Child"); 
        if (whichEl.visibility == "hide") { 
            whichEl.visibility = "show"; 
        } 
        else { 
            whichEl.visibility = "hide"; 
        } 
        arrange(); 
    } 
} 
onload = initIt;