//Site Search functions

 function cleardefaultdata()
    {
    document.getElementById('zoom_query').onfocus=function()
       {
       if ( this.value=='Search JavaScript Kit' )
          { this.value='' }
       }
    }

 function disabledefaultsearch()
    {
    document.getElementById('jksitesearch').onsubmit=function()
       {
       var searchvalue=document.getElementById('zoom_query').value
       if ( searchvalue=='Search JavaScript Kit' || searchvalue=='' )
          {
          alert('You haven\'t entered a search phrase yet!')
          return false
          }
       }
    }

 function setdefaultcategory()
    {
    var catsection=document.getElementById('jksitesearch_cat')
    var categories=catsection.getElementsByTagName('input')
    var docpath=location.pathname
    for (var i=0; i<categories.length; i++)
       { categories[i].checked=false }
    if (/(script\/)|(cutpastejava.shtml)/i.test(docpath))
       { categories[1].checked=true }
    else if (/(jsref\/)|(domref\/)|(filters\/)/i.test(docpath))
       { categories[3].checked=true }
    else if (/(javatutors\/)|(dhtmltutors\/)|(howto\/)/i.test(docpath))
       { categories[2].checked=true }
    else
       { categories[0].checked=true }
    }

 function togglecategories()
    {
    var catsection=document.getElementById('jksitesearch_cat')
    var categories=catsection.getElementsByTagName('input')
    catsection.onclick=function(e)
       {
       var target=window.event? event.srcElement : e.target
       if (target.tagName=="INPUT")
          {
          if (target.value==-1)
             {
             for (var i=0; i<categories.length; i++)
                { categories[i].checked=false }
             target.checked=true
             }
          else
             { categories[0].checked=false }
          }
       }
    }

//Drop Down Tabs Menu- Author: Dynamic Drive (http://www.dynamicdrive.com)
//Created: May 16th, 07'

 var tabdropdown =
    {
    disappeardelay: 200, //set delay in miliseconds before menu disappears onmouseout
    disablemenuclick: false, //when user clicks on a menu item with a drop down menu, disable menu item's link?
    enableiframeshim: 1, //1 or 0, for true or false
    islinux: /Linux/i.test(navigator.userAgent),

    //No need to edit beyond here////////////////////////
    dropmenuobj: null, ie: document.all, firefox: document.getElementById&&!document.all, previousmenuitem:null,
    currentpageurl: window.location.href.replace("http://"+window.location.hostname, "").replace(/^\//, ""), //get current page url (minus hostname, ie: http://www.dynamicdrive.com/)

    getposOffset:function(what, offsettype)
       {
       var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
       var parentEl=what.offsetParent;
       while (parentEl!=null)
          {
          totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
          parentEl=parentEl.offsetParent;
          }
       return totaloffset;
       },

    showhide:function(obj, e, obj2)
       { //obj refers to drop down menu, obj2 refers to tab menu item mouse is currently over
       if (this.ie || this.firefox)
          { this.dropmenuobj.style.left=this.dropmenuobj.style.top="-500px" }
       if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
          {
          if (obj2.parentNode.className.indexOf("default")==-1) //if tab isn't a default selected one
             { obj2.parentNode.className="selected" }
          obj.visibility="visible"
          this.hidebanner()
          }
       else if (e.type=="click")
          { obj.visibility="hidden" }
       },

    iecompattest:function()
       {
       return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
       },

    clearbrowseredge:function(obj, whichedge)
       {
       var edgeoffset=0
       if (whichedge=="rightedge")
          {
          var windowedge=this.ie && !window.opera? this.standardbody.scrollLeft+this.standardbody.clientWidth-15 : window.pageXOffset+window.innerWidth-15
          this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetWidth
          if (windowedge-this.dropmenuobj.x < this.dropmenuobj.contentmeasure)  //move menu to the left?
             { edgeoffset=this.dropmenuobj.contentmeasure-obj.offsetWidth }
          }
       else
          {
          var topedge=this.ie && !window.opera? this.standardbody.scrollTop : window.pageYOffset
          var windowedge=this.ie && !window.opera? this.standardbody.scrollTop+this.standardbody.clientHeight-15 : window.pageYOffset+window.innerHeight-18
          this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetHeight
          if (windowedge-this.dropmenuobj.y < this.dropmenuobj.contentmeasure)
             { //move up?
             edgeoffset=this.dropmenuobj.contentmeasure+obj.offsetHeight
             if ((this.dropmenuobj.y-topedge)<this.dropmenuobj.contentmeasure) //up no good either?
                { edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge }
             }
          this.dropmenuobj.firstlink.style.borderTopWidth=(edgeoffset==0)? 0 : "1px" //Add 1px top border to menu if dropping up
          }
       return edgeoffset
       },

    dropit:function(obj, e, dropmenuID)
       {
       if (this.dropmenuobj!=null)
          { //hide previous menu
          this.dropmenuobj.style.visibility="hidden" //hide menu
          if (this.previousmenuitem!=null && this.previousmenuitem!=obj)
             {
             if (this.previousmenuitem.parentNode.className.indexOf("default")==-1) //If the tab isn't a default selected one
                { this.previousmenuitem.parentNode.className="" }
             }
          }
       this.clearhidemenu()
       if ( this.ie || this.firefox )
          {
          obj.onmouseout=function(){tabdropdown.delayhidemenu(obj)}
          obj.onclick=function(){return !tabdropdown.disablemenuclick} //disable main menu item link onclick?
          this.dropmenuobj=document.getElementById(dropmenuID)
          this.dropmenuobj.onmouseover=function(){tabdropdown.clearhidemenu()}
          this.dropmenuobj.onmouseout=function(e){tabdropdown.dynamichide(e, obj)}
          this.dropmenuobj.onclick=function(){tabdropdown.delayhidemenu(obj)}
          this.showhide(this.dropmenuobj.style, e, obj)
          this.dropmenuobj.x=this.getposOffset(obj, "left")
          this.dropmenuobj.y=this.getposOffset(obj, "top")
          this.dropmenuobj.style.left=this.dropmenuobj.x-this.clearbrowseredge(obj, "rightedge")+"px"
          this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+1+"px"
          this.previousmenuitem=obj //remember main menu item mouse moved out from (and into current menu item)
          this.positionshim() //call iframe shim function
          }
       },

    contains_firefox:function(a, b)
       {
       while ( b.parentNode )
          {
          if ( (b = b.parentNode) == a )
             { return true; }
          }
       return false;
       },

    dynamichide:function(e, obj2)
       { //obj2 refers to tab menu item mouse is currently over
       var evtobj=window.event? window.event : e
       if (this.ie&&!this.dropmenuobj.contains(evtobj.toElement))
          { this.delayhidemenu(obj2) }
       else if (this.firefox&&e.currentTarget!= evtobj.relatedTarget&& !this.contains_firefox(evtobj.currentTarget, evtobj.relatedTarget))
          { this.delayhidemenu(obj2) }
       },

    delayhidemenu:function ( obj2 )
       {
       this.delayhide=setTimeout ( function()
          {
          tabdropdown.dropmenuobj.style.visibility='hidden';
          tabdropdown.showbanner();
          if (obj2.parentNode.className.indexOf('default')==-1)
             { obj2.parentNode.className='' }
          }, this.disappeardelay ) //hide menu
       },

    clearhidemenu:function()
       {
       if ( this.delayhide!="undefined" )
          {
          clearTimeout(this.delayhide)
          this.hidebanner()
          }
       },

    hidebanner:function()
       {
       if ( this.islinux )
          { document.getElementById('topbanner').style.visibility="hidden" }
       },

	 showbanner:function(){
			if (this.islinux)
				document.getElementById('topbanner').style.visibility="visible"
		},

	positionshim:function(){ //display iframe shim function
		if (this.enableiframeshim && typeof this.shimobject!="undefined"){
			if (this.dropmenuobj.style.visibility=="visible"){
				this.shimobject.style.width=this.dropmenuobj.offsetWidth+"px"
				this.shimobject.style.height=this.dropmenuobj.offsetHeight+"px"
				this.shimobject.style.left=this.dropmenuobj.style.left
				this.shimobject.style.top=this.dropmenuobj.style.top
			}
		this.shimobject.style.display=(this.dropmenuobj.style.visibility=="visible")? "block" : "none"
		}
	},

	hideshim:function(){
		if (this.enableiframeshim && typeof this.shimobject!="undefined")
			this.shimobject.style.display='none'
	},

isSelected:function(menuurl){
	var menuurl=menuurl.replace("http://"+menuurl.hostname, "").replace(/^\//, "")
	return (tabdropdown.currentpageurl==menuurl)
},

	init:function(menuid, dselected){
		this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body //create reference to common "body" across doctypes
		var menuitems=document.getElementById(menuid).getElementsByTagName("a")
		for (var i=0; i<menuitems.length; i++){
			if (menuitems[i].getAttribute("rel")){
				var relvalue=menuitems[i].getAttribute("rel")
				document.getElementById(relvalue).firstlink=document.getElementById(relvalue).getElementsByTagName("a")[0]
				menuitems[i].onmouseover=function(e){
					var event=typeof e!="undefined"? e : window.event
					tabdropdown.dropit(this, event, this.getAttribute("rel"))
				}
			}
			if (dselected=="auto" && typeof setalready=="undefined" && this.isSelected(menuitems[i].href)){
				menuitems[i].parentNode.className+=" selected default"
				var setalready=true
			}
			else if (parseInt(dselected)==i)
				menuitems[i].parentNode.className+=" selected default"
          }
       }
    }