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Thursday, January 29, 2009

Create Horizontal Menu Using Javascript

<script type="text/javascript">

var menuAlignment = 'left'; // Align menu to the left or right?
var topMenuSpacer = 0; // Horizontal space(pixels) between the main menu items
var activateSubOnClick = false; // if true-> Show sub menu items on click, if false, show submenu items onmouseover
var leftAlignSubItems = false; // left align sub items t

var activeMenuItem = false; // Don't change this option. It should initially be false
var activeTabIndex = 0; // Index of initial active tab (0 = first tab) - If the value below is set to true, it will override this one.
var rememberActiveTabByCookie = true; // Set it to true if you want to be able to save active tab as cookie

var MSIE = navigator.userAgent.indexOf('MSIE')>=0?true:false;
var Opera = navigator.userAgent.indexOf('Opera')>=0?true:false;
var navigatorVersion = navigator.appVersion.replace(/.*?MSIE ([0-9]\.[0-9]).*/g,'$1')/1;


function Get_Cookie(name) {
var start = document.cookie.indexOf(name+"=");
var len = start+name.length+1;
if ((!start) && (name != document.cookie.substring(0,name.length))) return null;
if (start == -1) return null;
var end = document.cookie.indexOf(";",len);
if (end == -1) end = document.cookie.length;
return unescape(document.cookie.substring(len,end));
}
// This function has been slightly modified
function Set_Cookie(name,value,expires,path,domain,secure) {
expires = expires * 60*60*24*1000;
var today = new Date();
var expires_date = new Date( today.getTime() + (expires) );
var cookieString = name + "=" +escape(value) +
( (expires) ? ";expires=" + expires_date.toGMTString() : "") +
( (path) ? ";path=" + path : "") +
( (domain) ? ";domain=" + domain : "") +
( (secure) ? ";secure" : "");
document.cookie = cookieString;
}

function showHide()
{
if(activeMenuItem){
activeMenuItem.className = 'inactiveMenuItem';
var theId = activeMenuItem.id.replace(/[^0-9]/g,'');
document.getElementById('submenu_'+theId).style.display='none';
var img = activeMenuItem.getElementsByTagName('IMG');
if(img.length>0)img[0].style.display='none';
}

var img = this.getElementsByTagName('IMG');
if(img.length>0)img[0].style.display='inline';

activeMenuItem = this;
this.className = 'activeMenuItem';
var theId = this.id.replace(/[^0-9]/g,'');
document.getElementById('submenu_'+theId).style.display='block';



if(rememberActiveTabByCookie){
Set_Cookie('dhtmlgoodies_tab_menu_tabIndex','index: ' + (theId-1),100);
}
}

function initMenu()
{
var mainMenuObj = document.getElementById('mainMenu');
var menuItems = mainMenuObj.getElementsByTagName('A');
if(document.all){
mainMenuObj.style.visibility = 'hidden';
document.getElementById('submenu').style.visibility='hidden';
}
if(rememberActiveTabByCookie){
var cookieValue = Get_Cookie('dhtmlgoodies_tab_menu_tabIndex') + '';
cookieValue = cookieValue.replace(/[^0-9]/g,'');
if(cookieValue.length>0 && cookieValue<menuItems.length){
activeTabIndex = cookieValue/1;
}
}

var currentLeftPos = 15;
for(var no=0;no<menuItems.length;no++){
if(activateSubOnClick)menuItems[no].onclick = showHide; else menuItems[no].onmouseover = showHide;
menuItems[no].id = 'mainMenuItem' + (no+1);
if(menuAlignment=='left')
menuItems[no].style.left = currentLeftPos + 'px';
else
menuItems[no].style.right = currentLeftPos + 'px';
currentLeftPos = currentLeftPos + menuItems[no].offsetWidth + topMenuSpacer;

var img = menuItems[no].getElementsByTagName('IMG');
if(img.length>0){
img[0].style.display='none';
if(MSIE && !Opera && navigatorVersion<7){
img[0].style.bottom = '-1px';
img[0].style.right = '-1px';
}
}

if(no==activeTabIndex){
menuItems[no].className='activeMenuItem';
activeMenuItem = menuItems[no];
var img = activeMenuItem.getElementsByTagName('IMG');
if(img.length>0)img[0].style.display='inline';

}else menuItems[no].className='inactiveMenuItem';
if(!document.all)menuItems[no].style.bottom = '-1px';
if(MSIE && navigatorVersion < 6)menuItems[no].style.bottom = '-2px';


}

var mainMenuLinks = mainMenuObj.getElementsByTagName('A');

var subCounter = 1;
var parentWidth = mainMenuObj.offsetWidth;
while(document.getElementById('submenu_' + subCounter)){
var subItem = document.getElementById('submenu_' + subCounter);

if(leftAlignSubItems){
// No action
}else{
var leftPos = mainMenuLinks[subCounter-1].offsetLeft;
document.getElementById('submenu_'+subCounter).style.paddingLeft = leftPos + 'px';
subItem.style.position ='absolute';
if(subItem.offsetWidth > parentWidth){
leftPos = leftPos - Math.max(0,subItem.offsetWidth-parentWidth);
}
subItem.style.paddingLeft = leftPos + 'px';
subItem.style.position ='static';


}
if(subCounter==(activeTabIndex+1)){
subItem.style.display='block';
}else{
subItem.style.display='none';
}

subCounter++;
}
if(document.all){
mainMenuObj.style.visibility = 'visible';
document.getElementById('submenu').style.visibility='visible';
}
document.getElementById('submenu').style.display='block';
}
window.onload = initMenu;
</script>


<%-- Menu here --%>
<div id="mainMenu">
<a>HOME</a><a>BOOST PERFORMANCE|</a> <a>PEOPLE|</a> <a>TRADING|</a>
</div>
<div id="submenu">
<div id="submenu_1">
<a href="/Default.aspx">Home</a> <a href="">My Home(Login Required)</a>
</div>
<div id="submenu_2">
<a href="">Oracles</a> <a href="/CompanyDirectory/Company_Directory_SearchResults.aspx">
Companies</a> <a href="/Visitor/Top_Projects.aspx">Projects</a> <a href="/Visitor/Top_Experts.aspx">
Experts</a> <a href="">Training</a> <a href="">Library</a>
</div>
<div id="submenu_3">
<a href="">Professional</a> <a href="">Networking</a> <a href="/Blog/Default.aspx">Bolgs</a>
<a href="">Job Ads</a> <a href="/Visitor/Top_Network.aspx">Clubs</a>
</div>
<div id="submenu_4">
<a href="">Trading</a>
</div>
</div>

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