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Tutoriales de Javascript
Introducción
Solo tienes que copear el código que esta abajo y si quieres puedes descargar el ejemplo funcionando al final.
<HEAD>
<title>Menú parte superior 4 </title>
<script LANGUAGE="Javascript">
var isDOM = (document.getElementById ? true : false);
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);
function getRef(id) {
if (isDOM) return document.getElementById(id);
if (isIE4) return document.all[id];
if (isNS4) return document.layers[id];
}
function getSty(id) {
return (isNS4 ? getRef(id) : getRef(id).style);
}
var popTimer = 0;
var litNow = new Array();
function popOver(menuNum, itemNum) {
clearTimeout(popTimer);
hideAllBut(menuNum);
litNow = getTree(menuNum, itemNum);
changeCol(litNow, true);
targetNum = menu[menuNum][itemNum].target;
if (targetNum > 0) {
thisX = parseInt(menu[menuNum][0].ref.left) +
parseInt(menu[menuNum][itemNum].ref.left);
thisY = parseInt(menu[menuNum][0].ref.top) +
parseInt(menu[menuNum][itemNum].ref.top);
with (menu[targetNum][0].ref) {
left = parseInt(thisX + menu[targetNum][0].x);
top = parseInt(thisY + menu[targetNum][0].y);
visibility = visible;
}
}
}
function popOut(menuNum, itemNum) {
if ((menuNum == 0) && !menu[menuNum][itemNum].target)
hideAllBut(0)
else
popTimer = setTimeout(hideAllBut(0), 500);
}
function getTree(menuNum, itemNum) {
itemArray = new Array(menu.length);
while(1) {
itemArray[menuNum] = itemNum;
if (menuNum == 0) return itemArray;
itemNum = menu[menuNum][0].parentItem;
menuNum = menu[menuNum][0].parentMenu;
}
}
function changeCol(changeArray, isOver) {
for (menuCount = 0; menuCount < changeArray.length; menuCount++) {
if (changeArray[menuCount]) {
newCol = isOver ? menu[menuCount][0].overCol : menu[menuCount][0].backCol;
with (menu[menuCount][changeArray[menuCount]].ref) {
if (isNS4) bgColor = newCol;
else backgroundColor = newCol;
}
}
}
}
function hideAllBut(menuNum) {
var keepMenus = getTree(menuNum, 1);
for (count = 0; count < menu.length; count++)
if (!keepMenus[count])
menu[count][0].ref.visibility = hidden;
changeCol(litNow, false);
}
function Menu(isVert, popInd, x, y, width, overCol, backCol, borderClass, textClass)
{
this.isVert = isVert;
this.popInd = popInd
this.x = x;
this.y = y;
this.width = width;
this.overCol = overCol;
this.backCol = backCol;
this.borderClass = borderClass;
this.textClass = textClass;
this.parentMenu = null;
this.parentItem = null;
this.ref = null;
}
function Item(text, href, frame, length, spacing, target) {
this.text = text;
this.href = href;
this.frame = frame;
this.length = length;
this.spacing = spacing;
this.target = target;
this.ref = null;
}
function writeMenus() {
if (!isDOM && !isIE4 && !isNS4) return;
for (currMenu = 0; currMenu < menu.length; currMenu++) with (menu[currMenu][0]) {
var str = , itemX = 0, itemY = 0;
for (currItem = 1; currItem < menu[currMenu].length; currItem++)
with (menu[currMenu][currItem]) {
var itemID = menu + currMenu + item + currItem;
var w = (isVert ? width : length);
var h = (isVert ? length : width);
if (isDOM || isIE4) {
str += <div id=" + itemID + " style="position: absolute; left: + itemX + ; top: +
itemY + ; width: + w + ;
height: + h + ; visibility: inherit; ;
if (backCol) str += background: + backCol + ; ;
str += " ;
}
if (isNS4) {
str += <layer id=" + itemID + " left=" + itemX + " top=" + itemY + " width=" + w + "
height=" + h + " visibility="inherit" ;
if (backCol) str += bgcolor=" + backCol + " ;
}
if (borderClass) str += class=" + borderClass + " ;
str += onMouseOver="popOver( + currMenu + , + currItem + )"
onMouseOut="popOut( + currMenu + , + currItem + )">;
str += <table width=" + (w - 8) + " border="0" cellspacing="0" cellpadding=" +
(!isNS4 && borderClass ? 3 : 0) + "><tr><td align="left" height=" + (h - 7) + "> +
<a class=" + textClass + " href=" + href + " + (frame ? target=" + frame + "> : >)
+ text + </a></td>;
if (target > 0) {
menu[target][0].parentMenu = currMenu;
menu[target][0].parentItem = currItem;
if (popInd) str += <td class=" + textClass + " align="right"> + popInd + </td>;
}
str += </tr></table> + (isNS4 ? </layer> : </div>);
if (isVert) itemY += length + spacing;
else itemX += length + spacing;
}
if (isDOM) {
var newDiv = document.createElement(div);
document.getElementsByTagName(body).item(0).appendChild(newDiv);
newDiv.innerHTML = str;
ref = newDiv.style;
ref.position = absolute;
ref.visibility = hidden;
}
if (isIE4) {
document.body.insertAdjacentHTML(beforeEnd, <div id="menu + currMenu + div" +
style="position: absolute; visibility: hidden"> + str + </div>);
ref = getSty(menu + currMenu + div);
}
if (isNS4) {
ref = new Layer(0);
ref.document.write(str);
ref.document.close();
}
for (currItem = 1; currItem < menu[currMenu].length; currItem++) {
itemName = menu + currMenu + item + currItem;
if (isDOM || isIE4) menu[currMenu][currItem].ref = getSty(itemName);
if (isNS4) menu[currMenu][currItem].ref = ref.document[itemName];
}
}
with(menu[0][0]) {
ref.left = x;
ref.top = y;
ref.visibility = visible;
}
}
var menu = new Array();
var defOver = #336699, defBack = #003366;
var defLength = 22;
menu[0] = new Array();
menu[0][0] = new Menu(false, , 5, 0, 17, #669999, #006666, , itemText);
menu[0][1] = new Item( Archivo, #, , 40, 10, 1);
menu[0][2] = new Item( Editar, #, , 40, 10, 2);
menu[0][3] = new Item( Ayudar, #, , 40, 10, 3);
menu[0][4] = new Item( Web, http://gusnz.cjb.net, _new, 40, 10, 0);
menu[1] = new Array();
menu[1][0] = new Menu(true, >, 0, 22, 80, defOver, defBack, itemBorder, itemText);
menu[1][1] = new Item(Abrir, #, , defLength, 0, 0);
menu[1][2] = new Item(Guardar, #, , defLength, 0, 0);
menu[1][3] = new Item(Reabrir, #, , defLength, 0, 4);
menu[1][4] = new Item(Salir, #, , defLength, 0, 0);
menu[2] = new Array();
menu[2][0] = new Menu(true, >, 0, 22, 80, defOver, defBack, itemBorder, itemText);
menu[2][1] = new Item(Cortar, #, , defLength, 0, 0);
menu[2][2] = new Item(Copiar, #, , defLength, 0, 0);
menu[2][3] = new Item(Pegar, #, , defLength, 0, 0);
menu[3] = new Array();
menu[3][0] = new Menu(true, <, 0, 22, 80, defOver, defBack, itemBorder, itemText);
menu[3][1] = new Item(Contenidos, #, , defLength, 0, 0);
menu[3][2] = new Item(índice, #, , defLength, 0, 0);
menu[3][3] = new Item(Acerca de, #, , defLength, 0, 5);
menu[4] = new Array();
menu[4][0] = new Menu(true, >, 85, 0, 120, #333366, #666699, crazyBorder,
crazyText);
menu[4][1] = new Item(Doc. Reciente:<br>Programación, #, , 36, 4, 0);
menu[4][2] = new Item(Doc. Reciente 2<br>Planificación, #, , 36, 7, 0);
menu[4][3] = new Item(Etc. etc..., #, , defLength, 0, 0);
menu[5] = new Array();
menu[5][0] = new Menu(true, >, -85, -17, 80, defOver, defBack, itemBorder,
itemText);
menu[5][1] = new Item(Fin de<br>menú, #, , 40, 0, 0);
var popOldWidth = window.innerWidth;
nsResizeHandler = new function(if (popOldWidth != window.innerWidth)
location.reload());
if (isNS4) document.captureEvents(Event.CLICK);
document.onclick = clickHandle;
function clickHandle(evt){
if (isNS4) document.routeEvent(evt);
hideAllBut(0);
}
function moveRoot(){
with(menu[0][0].ref) left = ((parseInt(left) < 100) ? 100 : 5);
}
// end -->
</script>
<!-- *** IMPORTANT STYLESHEET SECTION - Change the border classes and text
colours *** -->
<style>
<!--
.itemBorder { border: 1px solid black }
.itemText { text-decoration: none; color: #FFFFFF; font: 12px Arial, Helvetica }
.crazyBorder { border: 2px outset #663399 }
.crazyText { text-decoration: none; color: #FFCC99; font: Bold 12px Arial,
Helvetica }
-->
</style>
</HEAD>
<BODY marginwidth="0" marginheight="0" style="margin: 0" onLoad="writeMenus()"
onResize="if (isNS4) nsResizeHandler()">
<table bgcolor="#006666" width="100%" border="0" cellpadding="0" cellspacing="0">
<tr><td height="17"><font size="1"></font></td></tr></table>Autor: S/A
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