1//Drop Down Tabs Menu- Author: Dynamic Drive (http://www.dynamicdrive.com) 2//Created: May 16th, 07' 3 4var tabdropdown={ 5 disappeardelay: 200, //set delay in miliseconds before menu disappears onmouseout 6 disablemenuclick: false, //when user clicks on a menu item with a drop down menu, disable menu item's link? 7 enableiframeshim: 1, //1 or 0, for true or false 8 9 //No need to edit beyond here//////////////////////// 10 dropmenuobj: null, ie: document.all, firefox: document.getElementById&&!document.all, previousmenuitem:null, 11 currentpageurl: window.location.href.replace("http://"+window.location.hostname, "").replace(/^\//, ""), //get current page url (minus hostname, ie: http://www.dynamicdrive.com/) 12 13 getposOffset:function(what, offsettype){ 14 var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop; 15 var parentEl=what.offsetParent; 16 while (parentEl!=null){ 17 totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop; 18 parentEl=parentEl.offsetParent; 19 } 20 return totaloffset; 21 }, 22 23 showhide:function(obj, e, obj2){ //obj refers to drop down menu, obj2 refers to tab menu item mouse is currently over 24 if (this.ie || this.firefox) 25 this.dropmenuobj.style.left=this.dropmenuobj.style.top="-500px" 26 if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover"){ 27 if (obj2.parentNode.className.indexOf("default")==-1) //if tab isn't a default selected one 28 obj2.parentNode.className="selected" 29 obj.visibility="visible" 30 } 31 else if (e.type=="click") 32 obj.visibility="hidden" 33 }, 34 35 iecompattest:function(){ 36 return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body 37 }, 38 39 clearbrowseredge:function(obj, whichedge){ 40 var edgeoffset=0 41 if (whichedge=="rightedge"){ 42 var windowedge=this.ie && !window.opera? this.standardbody.scrollLeft+this.standardbody.clientWidth-15 : window.pageXOffset+window.innerWidth-15 43 this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetWidth 44 if (windowedge-this.dropmenuobj.x < this.dropmenuobj.contentmeasure) //move menu to the left? 45 edgeoffset=this.dropmenuobj.contentmeasure-obj.offsetWidth 46 } 47 else{ 48 var topedge=this.ie && !window.opera? this.standardbody.scrollTop : window.pageYOffset 49 var windowedge=this.ie && !window.opera? this.standardbody.scrollTop+this.standardbody.clientHeight-15 : window.pageYOffset+window.innerHeight-18 50 this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetHeight 51 if (windowedge-this.dropmenuobj.y < this.dropmenuobj.contentmeasure){ //move up? 52 edgeoffset=this.dropmenuobj.contentmeasure+obj.offsetHeight 53 if ((this.dropmenuobj.y-topedge)<this.dropmenuobj.contentmeasure) //up no good either? 54 edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge 55 } 56 this.dropmenuobj.firstlink.style.borderTopWidth=(edgeoffset==0)? 0 : "1px" //Add 1px top border to menu if dropping up 57 } 58 return edgeoffset 59 }, 60 61 dropit:function(obj, e, dropmenuID){ 62 if (this.dropmenuobj!=null){ //hide previous menu 63 this.dropmenuobj.style.visibility="hidden" //hide menu 64 if (this.previousmenuitem!=null && this.previousmenuitem!=obj){ 65 if (this.previousmenuitem.parentNode.className.indexOf("default")==-1) //If the tab isn't a default selected one 66 this.previousmenuitem.parentNode.className="" 67 } 68 } 69 this.clearhidemenu() 70 if (this.ie||this.firefox){ 71 obj.onmouseout=function(){tabdropdown.delayhidemenu(obj)} 72 obj.onclick=function(){return !tabdropdown.disablemenuclick} //disable main menu item link onclick? 73 this.dropmenuobj=document.getElementById(dropmenuID) 74 this.dropmenuobj.onmouseover=function(){tabdropdown.clearhidemenu()} 75 this.dropmenuobj.onmouseout=function(e){tabdropdown.dynamichide(e, obj)} 76 this.dropmenuobj.onclick=function(){tabdropdown.delayhidemenu(obj)} 77 this.showhide(this.dropmenuobj.style, e, obj) 78 this.dropmenuobj.x=this.getposOffset(obj, "left") 79 this.dropmenuobj.y=this.getposOffset(obj, "top") 80 this.dropmenuobj.style.left=this.dropmenuobj.x-this.clearbrowseredge(obj, "rightedge")+"px" 81 this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+1+"px" 82 this.previousmenuitem=obj //remember main menu item mouse moved out from (and into current menu item) 83 this.positionshim() //call iframe shim function 84 } 85 }, 86 87 contains_firefox:function(a, b) { 88 while (b.parentNode) 89 if ((b = b.parentNode) == a) 90 return true; 91 return false;
92 }, 93 94 dynamichide:function(e, obj2){ //obj2 refers to tab menu item mouse is currently over 95 var evtobj=window.event? window.event : e 96 if (this.ie&&!this.dropmenuobj.contains(evtobj.toElement)) 97 this.delayhidemenu(obj2) 98 else if (this.firefox&&e.currentTarget!= evtobj.relatedTarget&& !this.contains_firefox(evtobj.currentTarget, evtobj.relatedTarget)) 99 this.delayhidemenu(obj2) 100 }, 101 102 delayhidemenu:function(obj2){ 103 this.delayhide=setTimeout(function(){tabdropdown.dropmenuobj.style.visibility='hidden'; if (obj2.parentNode.className.indexOf('default')==-1) obj2.parentNode.className=''},this.disappeardelay) //hide menu 104 }, 105 106 clearhidemenu:function(){ 107 if (this.delayhide!="undefined") 108 clearTimeout(this.delayhide) 109 }, 110 111 positionshim:function(){ //display iframe shim function 112 if (this.enableiframeshim && typeof this.shimobject!="undefined"){ 113 if (this.dropmenuobj.style.visibility=="visible"){ 114 this.shimobject.style.width=this.dropmenuobj.offsetWidth+"px" 115 this.shimobject.style.height=this.dropmenuobj.offsetHeight+"px" 116 this.shimobject.style.left=this.dropmenuobj.style.left 117 this.shimobject.style.top=this.dropmenuobj.style.top 118 } 119 this.shimobject.style.display=(this.dropmenuobj.style.visibility=="visible")? "block" : "none" 120 } 121 }, 122 123 hideshim:function(){ 124 if (this.enableiframeshim && typeof this.shimobject!="undefined") 125 this.shimobject.style.display='none' 126 }, 127 128isSelected:function(menuurl){ 129 var menuurl=menuurl.replace("http://"+menuurl.hostname, "").replace(/^\//, "") 130 return (tabdropdown.currentpageurl==menuurl) 131}, 132 133 init:function(menuid, dselected){ 134 this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body //create reference to common "body" across doctypes 135 var menuitems=document.getElementById(menuid).getElementsByTagName("a") 136 for (var i=0; i<menuitems.length; i++){ 137 if (menuitems[i].getAttribute("rel")){ 138 var relvalue=menuitems[i].getAttribute("rel") 139 document.getElementById(relvalue).firstlink=document.getElementById(relvalue).getElementsByTagName("a")[0] 140 menuitems[i].onmouseover=function(e){ 141 var event=typeof e!="undefined"? e : window.event 142 tabdropdown.dropit(this, event, this.getAttribute("rel")) 143 } 144 } 145 if (dselected=="auto" && typeof setalready=="undefined" && this.isSelected(menuitems[i].href)){ 146 menuitems[i].parentNode.className+=" selected default" 147 var setalready=true 148 } 149 else if (parseInt(dselected)==i) 150 menuitems[i].parentNode.className+=" selected default" 151 } 152 } 153 154}
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