//Part 1 - Menu System with drop down
//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

	//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"
			}
		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'; if (obj2.parentNode.className.indexOf('default')==-1) obj2.parentNode.className=''},this.disappeardelay) //hide menu
	},

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

	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"
		}
	}

}










//Part 2 - Slide show with crossfade effect
			var PhotoPath = new Array("images/ball_black.gif","images/ball_green.gif","images/ball_blue.gif","images/ball_yellow.gif","images/ball_red.gif");
			var PhotoI = new Array(2);
			var PhotoCount = PhotoPath.length;
			var PhotoOpacity = +101;
			var PhotoFadeStep = 2;
			var PhotoFadeInterval = 40;
			var PhotoWait = +2000;
			var PhotoPause = false;
			var PhotoFirefox = true;
			var PhotoEventHandlerExecuting;
			function init()
				{
				var i;
				var s;
				if(+PhotoCount < +2){return;}
				PhotoI[0] = PhotoCount-1;
				PhotoI[1] = +0;
				s = "";
				for(i=0;i<PhotoCount;i++)
					{
					s += "<a href='default.asp' title='4MTGCards.com'><img id='CrossFadePhoto" + i + "' name='CrossFadePhoto" + i + "' class='mPhoto' style='visibility: hidden; zIndex: 0;' src='" + PhotoPath[i] + "' alt='' width='50px' height='50px' border='0'></a>";
					}
				document.getElementById("mContainer").innerHTML = s;
				if(document.all){PhotoFirefox = false;} 
				if(!PhotoFirefox)
					{ //Internext Explorer uses too much processor time for the effect so we use less demanding settings
					PhotoFadeStep = 5; //5
					PhotoFadeInterval = 100; //100
					}
				document.getElementById('CrossFadePhoto0').style.visibility = 'visible';
				trash = setInterval("PhotoFade();", PhotoFadeInterval);
				}
			function PhotoSetOpacity()
				{
				var n = new Array(100-PhotoOpacity, +PhotoOpacity);
				var o1;
				for(var i=0;i<2;i++)
					{
					o1 = document.getElementById('CrossFadePhoto' + PhotoI[i]).style;
					if(PhotoFirefox){o1.MozOpacity = n[i]/100;}
					else{o1.filter = "alpha(opacity=" + n[i] + ")";}
					}
				}
			function PhotoFade()
				{
				if(PhotoPause||PhotoEventHandlerExecuting){return;}
				PhotoEventHandlerExecuting = true;
				var i;
				var o = new Array(2);
				if(+PhotoOpacity > +100)
					{
					PhotoOpacity = +0;
					for(i=0;i<2;i++){o[i]=document.getElementById('CrossFadePhoto' + PhotoI[i]);}
					o[0].style.visibility = 'hidden';
					o[0].style.zIndex = 1;

					//increment pointers
					for(i=0;i<2;i++){PhotoI[i] = (+PhotoI[i] + +1)%PhotoCount; o[i]=document.getElementById('CrossFadePhoto' + PhotoI[i]);}

					PhotoSetOpacity(); //set the opacity of the 2 current photos
					o[0].style.zIndex = 1;
					o[1].style.zIndex = 2;
					o[1].style.visibility = 'visible';
					PhotoPause = true;
					trash = setTimeout("PhotoPause = false;", PhotoWait);
					}
				else{PhotoSetOpacity(); }
				PhotoOpacity += +PhotoFadeStep;
				PhotoEventHandlerExecuting = false;
				}










//Part3 - Login and Logout Functions
				function Login()
					{
					var f1 = document.Form9;
					var o1 = f1.login_or_logout;
					o1.value = "Login";
					f1.submit();
					}
				function Logout()
					{
					var f1 = document.Form9;
					var o1 = f1.login_or_logout;
					o1.value = "Logout";
					f1.submit();
					}