/* Flex Level Drop Down Menu v1.1
* Created: Jan 5th, 2010 by DynamicDrive.com. This notice must stay intact for usage 
* Author: Dynamic Drive at http://www.dynamicdrive.com/
* Visit http://www.dynamicdrive.com/ for full source code
*/

//Version 1.1 (Feb 19th, 2010): Each flex menu (UL) can now be associated with a link dynamically, and/or defined using JavaScript instead of as markup.

//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,
    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('mouseenter', 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])
                }
            })
            $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){
        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("mouseenter", function(e){
            $flexmenu.css('zIndex', ++flexdropdownmenu.startzindex)
            flexdropdownmenu.positionul($, $flexmenu, e, $target)
            flexdropdownmenu.showbox($, $flexmenu, e)
        })
        $target.bind("mouseleave", function(e){
            flexdropdownmenu.hidebox($, $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

    }
}