// webreference.com/dhtml/column12

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

function expandIt(el) {
	if (!ver4) return;
	if (IE4) {expandIE(el)} else {expandNS(el)}
}

function expandIE(el) { 
	whichEl = eval(el + "Child");
	whichIm = event.srcElement;
	if (whichEl.style.display == "none") {
		whichEl.style.display = "block";
		whichIm.src = "http://airairshow.com/pix/d-open.gif";		
	}
	else {
		whichEl.style.display = "none";
		whichIm.src = "http://airairshow.com/pix/d-close.gif";
	}
}

function expandNS(el) {
	whichEl = eval("document." + el + "Child");
	whichIm = eval("document." + el + "Parent.document.images['dossier']");
	if (whichEl.visibility == "hide") {
		whichEl.visibility = "show";
		whichIm.src = "http://airairshow.com/pix/d-open.gif";
	}
	else {
		whichEl.visibility = "hide";
		whichIm.src = "http://airairshow.com/pix/d-close.gif";
	}
	arrange();
}

function showAll() {
	for (i=firstInd; i<document.layers.length; i++) {
		whichEl = document.layers[i];
		whichEl.visibility = "show";
	}
}

with (document) {
	write("<STYLE TYPE='text/css'>");
	if (NS4) {
		write(".parent {position:absolute; visibility:hidden; left:0px; width:150px;}");
		write(".child {position:absolute; visibility:hidden; left:20px; width:130px;}");
	}
	else {
		write(".child {display:none; position:relative; left:20px;}")
	}
	write("</STYLE>");
}

onload = initIt;