Ragazzi è possibile che quello che cerco è nelle prime riche del codice? (la parte commentata)
//Usage: $(elementselector).addflexmenu('menuid', options)
//ie:
//jQuery(document).ready(function($){
//$('a.mylinks').addflexmenu('flexmenu1') //apply flex menu with ID "flexmenu1" to links with class="mylinks"
//})
jQuery.noConflict()
var flexdropdownmenu={
arrowpath: 'arrow.gif', //full URL or path to arrow image
animspeed: 200, //reveal animation speed (in milliseconds)
showhidedelay: [150, 150], //delay before menu appears and disappears when mouse rolls over it, in milliseconds
//***** NO NEED TO EDIT BEYOND HERE
startzindex:1000,
ismobile:navigator.userAgent.match(/(iPad)|(iPhone)|(iPod)|(android)|(webOS)/i) != null, //boolean check for popular mobile browsers
builtflexmenuids: [], //ids of flex menus already built (to prevent repeated building of same flex menu)
positionul:function($, $ul, e, $anchor){
var istoplevel=$ul.hasClass('jqflexmenu') //Bool indicating whether $ul is top level flex menu DIV
var docrightedge=$(document).scrollLeft()+$(window).width()-40 //40 is to account for shadows in FF
var docbottomedge=$(document).scrollTop()+$(window).height()-40
if (istoplevel){ //if main flex menu DIV
var offsets=$anchor.offset()
var anchorsetting=$anchor.data('setting')
var x=offsets.left+anchorsetting.useroffsets[0]+(anchorsetting.dir=="h"? $anchor.outerWidth() : 0) //x pos of main flex menu UL
var y=offsets.top+anchorsetting.useroffsets[1]+(anchorsetting.dir=="h"? 0 : $anchor.outerHeight())
x=(x+$ul.data('dimensions').w > docrightedge)? x-(anchorsetting.useroffsets[0]*2)-$ul.data('dimensions').w+$anchor.outerWidth()+(anchorsetting.dir=="h"? -($anchor.outerWidth()*2) : 0) : x //if not enough horizontal room to the ridge of the cursor
y=(y+$ul.data('dimensions').h > docbottomedge)? y-(anchorsetting.useroffsets[1]*2)-$ul.data('dimensions').h-$anchor.outerHeight()+(anchorsetting.dir=="h"? ($anchor.outerHeight()*2) : 0) : y
}
else{ //if sub level flex menu UL
var $parentli=$ul.data('$parentliref')
var parentlioffset=$parentli.offset()
var x=$ul.data('dimensions').parentliw //x pos of sub UL
var y=0
x=(parentlioffset.left+x+$ul.data('dimensions').w > docrightedge)? x-$ul.data('dimensions').parentliw-$ul.data('dimensions').w : x //if not enough horizontal room to the ridge parent LI
y=(parentlioffset.top+$ul.data('dimensions').h > docbottomedge)? y-$ul.data('dimensions').h+$ul.data('dimensions').parentlih : y
}
$ul.css({left:x, top:y})
},
showbox:function($, $flexmenu, e){
clearTimeout($flexmenu.data('timers').hidetimer)
$flexmenu.data('timers').showtimer=setTimeout(function(){$flexmenu.show(flexdropdownmenu.animspeed)}, this.showhidedelay[0])
},
hidebox:function($, $flexmenu){
clearTimeout($flexmenu.data('timers').showtimer)
$flexmenu.data('timers').hidetimer=setTimeout(function(){$flexmenu.hide(100)}, this.showhidedelay[1]) //hide flex menu plus all of its sub ULs
},
buildflexmenu:function($, $menu, $target){
$menu.css({display:'block', visibility:'hidden', zIndex:this.startzindex}).addClass('jqflexmenu').appendTo(document.body)
$menu.bind('mouseenter', function(){
clearTimeout($menu.data('timers').hidetimer)
})
$menu.bind('mouseleave', function(){ //hide menu when mouse moves out of it
flexdropdownmenu.hidebox($, $menu)
})
$menu.data('dimensions', {w:$menu.outerWidth(), h:$menu.outerHeight()}) //remember main menu's dimensions
$menu.data('timers', {})
var $lis=$menu.find("ul").parent() //find all LIs within menu with a sub UL
$lis.each(function(i){
var $li=$(this).css({zIndex: 1000+i})
var $subul=$li.find('ul:eq(0)').css({display:'block'}) //set sub UL to "block" so we can get dimensions
$subul.data('dimensions', {w:$subul.outerWidth(), h:$subul.outerHeight(), parentliw:this.offsetWidth, parentlih:this.offsetHeight})
$subul.data('$parentliref', $li) //cache parent LI of each sub UL
$subul.data('timers', {})
$li.data('$subulref', $subul) //cache sub UL of each parent LI
$li.children("a:eq(0)").append( //add arrow images
'<img src="'+flexdropdownmenu.arrowpath+'" class="rightarrowclass" style="border:0;" />'
)
$li.bind(flexdropdownmenu.triggerevt, function(e){ //show sub UL when mouse moves over parent LI
var $targetul=$(this).css('zIndex', ++flexdropdownmenu.startzindex).addClass("selected").data('$subulref')
if ($targetul.queue().length<=1){ //if 1 or less queued animations
clearTimeout($targetul.data('timers').hidetimer)
$targetul.data('timers').showtimer=setTimeout(function(){
flexdropdownmenu.positionul($, $targetul, e)
$targetul.show(flexdropdownmenu.animspeed)
}, flexdropdownmenu.showhidedelay[0])
if (flexdropdownmenu.triggerevt=="click" && $(e.target).next('ul').length==1) //if LI being clicked on is a menu header
return false
}
})
$li.bind('mouseleave', function(e){ //hide sub UL when mouse moves out of parent LI
var $targetul=$(this).data('$subulref')
clearTimeout($targetul.data('timers').showtimer)
$targetul.data('timers').hidetimer=setTimeout(function(){$targetul.hide(100).data('$parentliref').removeClass('selected')}, flexdropdownmenu.showhidedelay[1])
})
})
$menu.find('ul').andSelf().css({display:'none', visibility:'visible'}) //collapse all ULs again
this.builtflexmenuids.push($menu.get(0).id) //remember id of flex menu that was just built
},
init:function($, $target, $flexmenu){
this.triggerevt=(this.ismobile)? "click" : "mouseenter"
this.showhidedelay[0]=(this.ismobile)? 0 : this.showhidedelay[0]
if (this.builtflexmenuids.length==0){ //only bind click event to document once
$(document).bind("click", function(e){
if (e.button==0){ //hide all flex menus (and their sub ULs) when left mouse button is clicked
$('.jqflexmenu').find('ul').andSelf().hide()
}
})
}
if (jQuery.inArray($flexmenu.get(0).id, this.builtflexmenuids)==-1) //if this flex menu hasn't been built yet
this.buildflexmenu($, $flexmenu, $target)
if ($target.parents().filter('ul.jqflexmenu').length>0) //if $target matches an element within the flex menu markup, don't bind onflexmenu to that element
return
var useroffsets=$target.attr('data-offsets')? $target.attr('data-offsets').split(',') : [0,0] //get additional user offsets of menu
useroffsets=[parseInt(useroffsets[0]), parseInt(useroffsets[1])]
$target.data('setting', {dir: $target.attr('data-dir'), useroffsets: useroffsets}) //store direction (drop right or down) of menu plus user offsets
$target.bind(flexdropdownmenu.triggerevt, function(e){
$flexmenu.css('zIndex', ++flexdropdownmenu.startzindex)
flexdropdownmenu.positionul($, $flexmenu, e, $target)
flexdropdownmenu.showbox($, $flexmenu, e)
if (flexdropdownmenu.triggerevt=="click")
e.preventDefault()
})
$target.bind("mouseleave", function(e){
flexdropdownmenu.hidebox($, $flexmenu)
})
}
}
jQuery.fn.addflexmenu=function(flexmenuid, options){
var $=jQuery
return this.each(function(){ //return jQuery obj
var $target=$(this)
if (typeof options=="object"){ //if options parameter defined
if (options.dir)
$target.attr('data-dir', options.dir) //set/overwrite data-dir attr with defined value
if (options.offsets)
$target.attr('data-offsets', options.offsets) //set/overwrite data-offsets attr with defined value
}
if ($('#'+flexmenuid).length==1) //check flex menu is defined
flexdropdownmenu.init($, $target, $('#'+flexmenuid))
})
};
//By default, add flex menu to anchor links with attribute "data-flexmenu"
jQuery(document).ready(function($){
var $anchors=$('*[data-flexmenu]')
$anchors.each(function(){
$(this).addflexmenu(this.getAttribute('data-flexmenu'))
})
})
//ddlistmenu: Function to define a UL list menu dynamically
function ddlistmenu(id, className){
var menu=document.createElement('ul')
if (id)
menu.id=id
if (className)
menu.className=className
this.menu=menu
}
ddlistmenu.prototype={
addItem:function(url, text, target){
var li=document.createElement('li')
li.innerHTML='<a href="'+url+'" target="'+target+'">'+text+'</a>'
this.menu.appendChild(li)
this.li=li
return this
},
addSubMenu:function(){
var s=new ddlistmenu(null, null)
this.li.appendChild(s.menu)
return s
}
}