var arrowimages={
    down:['downarrow', '/wp-content/themes/panorama/images/down.gif', 20],
    right:['rightarrow', '/wp-content/themes/panorama/images/right.gif']
    }

var horizmenu={

animateduration: {over: 300, out: 100}, 

buildmenu:function(menuid, arrowsvar){
    jQuery(document).ready(function($){
        var $mainmenu=$("#"+menuid+">ul")
        var $headers=$mainmenu.find("ul").parent()
        $headers.each(function(i){
        var $curobj=$(this)
        var $subul=$(this).find('ul:eq(0)')
        this._dimensions={w:this.offsetWidth, h:this.offsetHeight, subulw:$subul.outerWidth(), subulh:$subul.outerHeight()}
        this.istopheader=$curobj.parents("ul").length==1? true : false
        $subul.css({top:this.istopheader? this._dimensions.h+"px" : 0})
        $curobj.children("a:eq(0)").css(this.istopheader? {paddingRight: arrowsvar.down[2]} : {}).append(
                '<img src="'+ (this.istopheader? arrowsvar.down[1] : arrowsvar.right[1])
                +'" class="' + (this.istopheader? arrowsvar.down[0] : arrowsvar.right[0])
                + '" style="border:0;" />'
            )
            $curobj.hover(
            
            function(e){
                    var $targetul=$(this).children("ul:eq(0)")
                    this._offsets={left:$(this).offset().left, top:$(this).offset().top}
                    var menuleft=this.istopheader? 0 : this._dimensions.w

    menuleft=(this._offsets.left+menuleft+this._dimensions.subulw>$(window).width())? (this.istopheader? -this._dimensions.subulw+this._dimensions.w : -this._dimensions.w) : menuleft
                    if ($targetul.queue().length<=1) 
                        $targetul.css({left:menuleft+"px", width:this._dimensions.subulw+'px'}).slideDown(horizmenu.animateduration.over)
                },
                function(e){
                    var $targetul=$(this).children("ul:eq(0)")
                    $targetul.slideUp(horizmenu.animateduration.out)
                }
            ) 
        }) 
        $mainmenu.find("ul").css({display:'none', visibility:'visible'})
    }) 
}
}

horizmenu.buildmenu("tabs", arrowimages)