/* =================================================================================================
 * TransMenu 
 * March, 2003
 * Customizable multi-level animated DHTML menus with transparency.
 * =================================================================================================
 * "Can I use this?"
 * 
 * Use of this library is governed by the Creative Commons Attribution 2.0 License. You can check it 
 * out at: http://creativecommons.org/licenses/by/2.0/
 *
 * Basically: You may copy, distribute, and eat this code as you wish. But you must give me credit 
 * for writing it. You may not misrepresent yourself as the author of this code.
 * =================================================================================================
 * "It's kinda hard to read, though"
 *
 * The uncompressed, commented version of this script can be found at: 
 * http://youngpup.net/projects/transMenus
 * ============================================================================================== */
//TransMenu.PuceNav="/img/PuceNav.gif";
//TransMenu.spacerGif="/img/x.gif";
//TransMenu.dingbatOn="/img/submenu-on.gif";
//TransMenu.dingbatOff="/img/submenu-off.gif";
TransMenu.dingbatSize=0;
TransMenu.menuPadding=0;
TransMenu.itemPadding=0;
TransMenu.shadowSize=0;
TransMenu.shadowOffset=0;
TransMenu.shadowColor="#fff";
//TransMenu.shadowPng="/img/grey-40.png";
TransMenu.backgroundColor="#FFFFFF";
//TransMenu.backgroundPng="/img/white-90.png";
TransMenu.hideDelay=1000;
TransMenu.slideTime=400;
TransMenu.reference={topLeft:1,topRight:2,bottomLeft:3,bottomRight:4};
TransMenu.direction={down:1,right:2};
TransMenu.registry=[];
TransMenu._maxZ=100;
TransMenu.isSupported=function(){var ua=navigator.userAgent.toLowerCase();
var pf=navigator.platform.toLowerCase();
var an=navigator.appName;
var r=false;
if(ua.indexOf("gecko")>-1&&navigator.productSub>=20020605)r=true;
else if(an=="Microsoft Internet Explorer"){if(document.getElementById){if(pf.indexOf("mac")==0){r=/msie (\d(.\d*)?)/.test(ua)&&Number(RegExp.$1)>=5.1;
}
else r=true;
}}
return r;
}
TransMenu.initialize=function(){for(var i=0,menu=null;
menu=this.registry[i];
i++){menu.initialize();
}}
TransMenu.renderAll=function(){var aMenuHtml=[];
for(var i=0,menu=null;
menu=this.registry[i];
i++){aMenuHtml[i]=menu.toString();
}
document.write(aMenuHtml.join(""));
}
function TransMenu(oActuator,iDirection,iLeft,iTop,iReferencePoint,parentMenuSet){this.addItem=addItem;
this.addMenu=addMenu;
this.toString=toString;
this.initialize=initialize;
this.isOpen=false;
this.show=show;
this.hide=hide;
this.items=[];
this.onactivate=new Function();
this.ondeactivate=new Function();
this.onmouseover=new Function();
this.onqueue=new Function();
this.ondequeue=new Function();
this.index=TransMenu.registry.length;
TransMenu.registry[this.index]=this;
var id="TransMenu"+this.index;
var contentHeight=null;
var contentWidth=null;
var childMenuSet=null;
var animating=false;
var childMenus=[];
var slideAccel=-1;
var elmCache=null;
var ready=false;
var _this=this;
var a=null;
var pos=iDirection==TransMenu.direction.down?"bottom":"left";
var dim=null;


function addItem(sText,sUrl){var item=new TransMenuItem(sText,sUrl,this);
item._index=this.items.length;
this.items[item._index]=item;
}
function addMenu(oMenuItem){if(!oMenuItem.parentMenu==this)throw new Error("Cannot add a menu here");
if(childMenuSet==null)childMenuSet=new TransMenuSet(TransMenu.direction.right,-5,2,TransMenu.reference.topRight);
var m=childMenuSet.addMenu(oMenuItem);
childMenus[oMenuItem._index]=m;
m.onmouseover=child_mouseover;
m.ondeactivate=child_deactivate;
m.onqueue=child_queue;
m.ondequeue=child_dequeue;
return m;
}
function initialize(){initCache();
initEvents();
initSize();
ready=true;
}
function show(){if(ready){_this.isOpen=true;
animating=true;
setContainerPos();
elmCache["clip"].style.visibility="visible";
elmCache["clip"].style.zIndex=TransMenu._maxZ++;
slideStart();
_this.onactivate();
}}
function hide(){if(ready){_this.isOpen=false;
animating=true;
for(var i=0,item=null;
item=elmCache.item[i];
i++)dehighlight(item);
if(childMenuSet)childMenuSet.hide();
slideStart();
_this.ondeactivate();
}}
function setContainerPos(){var sub=oActuator.constructor==TransMenuItem;
var act=sub?oActuator.parentMenu.elmCache["item"][oActuator._index]:oActuator;
var el=act;
var lg=el.clientWidth;
var x=0;
var y=0;
//var minX=0;
//var maxX=(document.body.clientWidth-400)-parseInt(elmCache["clip"].style.width);
//var minY=(document.body.clientHeight-400)-parseInt(elmCache["clip"].style.height);
//var maxY=(document.body.clientHeight-400)-parseInt(elmCache["clip"].style.height);

while(sub?el.parentNode.className.indexOf("transMenu")==-1:el.offsetParent){
x+=el.offsetLeft;
//y+=el.offsetTop;
if(el.scrollLeft)x-=el.scrollLeft;
if(el.scrollTop)y-=el.scrollTop;
el=el.offsetParent;
}
if(oActuator.constructor==TransMenuItem){
x+=parseInt(el.parentNode.style.left);
//y+=parseInt(el.parentNode.style.top);
}

x+=iLeft;
y+=iTop;


//x=Math.max(Math.min(x,maxX),minX);
//y=Math.max(Math.min(y,maxY),minY);
y=135-parseInt(elmCache["clip"].style.height);
var lp=elmCache["items"].offsetWidth;
elmCache["clip"].style.left=x+(lg-lp)/2+"px";
elmCache["clip"].style.top=y+"px";
}
function slideStart(){var x0=parseInt(elmCache["content"].style[pos]);
var x1=_this.isOpen?0:-dim;
if(a!=null)a.stop();
a=new Accelimation(x0,x1,TransMenu.slideTime,slideAccel);
a.onframe=slideFrame;
a.onend=slideEnd;
a.start();
}
function slideFrame(x){elmCache["content"].style[pos]=x+"px";
}
function slideEnd(){if(!_this.isOpen)elmCache["clip"].style.visibility="hidden";
animating=false;
}
function initSize(){
var ow=elmCache["items"].offsetWidth;
var oh=elmCache["items"].offsetHeight;
var ua=navigator.userAgent.toLowerCase();
elmCache["clip"].style.width=ow+TransMenu.shadowSize+"px";
elmCache["clip"].style.height=oh+TransMenu.shadowSize+"px";
elmCache["content"].style.width=ow+TransMenu.shadowSize+"px";
elmCache["content"].style.height=oh+TransMenu.shadowSize+"px";
contentHeight=oh+TransMenu.shadowSize;
contentWidth=ow+TransMenu.shadowSize;
dim=iDirection==TransMenu.direction.down?contentHeight:contentWidth;
elmCache["content"].style[pos]=-dim-TransMenu.shadowSize+"px";

elmCache["clip"].style.visibility="hidden";
if(ua.indexOf("mac")==-1||ua.indexOf("gecko")>-1){
/*elmCache["background"].style.width=ow+"px";
elmCache["background"].style.height=oh+"px";
elmCache["background"].style.backgroundColor=TransMenu.backgroundColor;
elmCache["shadowRight"].style.left=ow+"px";
elmCache["shadowRight"].style.height=oh-(TransMenu.shadowOffset-TransMenu.shadowSize)+"px";
elmCache["shadowRight"].style.backgroundColor=TransMenu.shadowColor;
elmCache["shadowBottom"].style.top=oh+"px";
elmCache["shadowBottom"].style.width=ow-TransMenu.shadowOffset+"px";
elmCache["shadowBottom"].style.backgroundColor=TransMenu.shadowColor;*/
}
else{
/*elmCache["background"].firstChild.src=TransMenu.backgroundPng;
elmCache["background"].firstChild.width=ow;
elmCache["background"].firstChild.height=oh;
elmCache["shadowRight"].firstChild.src=TransMenu.shadowPng;
elmCache["shadowRight"].style.left=ow+"px";
elmCache["shadowRight"].firstChild.width=TransMenu.shadowSize;
elmCache["shadowRight"].firstChild.height=oh-(TransMenu.shadowOffset-TransMenu.shadowSize);
elmCache["shadowBottom"].firstChild.src=TransMenu.shadowPng;
elmCache["shadowBottom"].style.top=oh+"px";
elmCache["shadowBottom"].firstChild.height=TransMenu.shadowSize;
elmCache["shadowBottom"].firstChild.width=ow-TransMenu.shadowOffset;*/
}}
function initCache(){var menu=document.getElementById(id);
var all=menu.all?menu.all:menu.getElementsByTagName("*");
elmCache={};
elmCache["clip"]=menu;
elmCache["item"]=[];
for(var i=0,elm=null;
elm=all[i];
i++){switch(elm.className){case"items":case"content":case"background":case"shadowRight":case"shadowBottom":elmCache[elm.className]=elm;
break;
case"item":elm._index=elmCache["item"].length;
elmCache["item"][elm._index]=elm;
break;
}}
_this.elmCache=elmCache;
}
function initEvents(){
	for(var i=0,item=null; item=elmCache.item[i];i++)
		{
		item.onmouseover=item_mouseover;
		item.onmouseout=item_mouseout;
		item.onclick=item_click;
		}
		if(typeof oActuator.tagName!="undefined"){
		oActuator.onmouseover=actuator_mouseover;
		oActuator.onmouseout=actuator_mouseout;
		}
		elmCache["content"].onmouseover=content_mouseover;
		elmCache["content"].onmouseout=content_mouseout;
	}
	
function highlight(oRow){oRow.className="item hover";
	if(childMenus[oRow._index])oRow.lastChild.firstChild.src=TransMenu.dingbatOn;
	}
	
function dehighlight(oRow){oRow.className="item";
	if(childMenus[oRow._index])oRow.lastChild.firstChild.src=TransMenu.dingbatOff;
	}
	
function item_mouseover(){if(!animating){highlight(this);
	if(childMenus[this._index])childMenuSet.showMenu(childMenus[this._index]);
	else if(childMenuSet)childMenuSet.hide();
		}
	}
	
function item_mouseout(){if(!animating){if(childMenus[this._index])childMenuSet.hideMenu(childMenus[this._index]);
else dehighlight(this);
}}
function item_click(){if(!animating){if(_this.items[this._index].url)location.href=_this.items[this._index].url;
}}
function actuator_mouseover(){parentMenuSet.showMenu(_this);
}
function actuator_mouseout(){parentMenuSet.hideMenu(_this);
}
function content_mouseover(){if(!animating){parentMenuSet.showMenu(_this);
_this.onmouseover();
}}
function content_mouseout(){if(!animating){parentMenuSet.hideMenu(_this);
}}
function child_mouseover(){if(!animating){parentMenuSet.showMenu(_this);
}}
function child_deactivate(){for(var i=0;
i<childMenus.length;
i++){if(childMenus[i]==this){dehighlight(elmCache["item"][i]);
break;
}}}
function child_queue(){parentMenuSet.hideMenu(_this);
}
function child_dequeue(){parentMenuSet.showMenu(_this);
}

function toString(){
	var aHtml=[];
	var sClassName="transMenu"+(oActuator.constructor!=TransMenuItem?" top":"");
	for(var i=0,item=null; item=this.items[i];i++){
		aHtml[i]=item.toString(childMenus[i],id);
	}
	
return'<div id="'+id+'" class="'+sClassName+'">'+'<div class="content"><table class="items" cellpadding="0" cellspacing="0" border="0">'+aHtml.join('')+'</table></div></div>';
}}
TransMenuSet.registry=[];


function TransMenuSet(iDirection,iLeft,iTop,iReferencePoint){this.addMenu=addMenu;
this.showMenu=showMenu;
this.hideMenu=hideMenu;
this.hide=hide;
this.hideCurrent=hideCurrent;
var menus=[];
var _this=this;
var current=null;
this.index=TransMenuSet.registry.length;
TransMenuSet.registry[this.index]=this;


function addMenu(oActuator){var m=new TransMenu(oActuator,iDirection,iLeft,iTop,iReferencePoint,this);
menus[menus.length]=m;
return m;
}
function showMenu(oMenu){if(oMenu!=current){if(current!=null)hide(current);
current=oMenu;
oMenu.show();
}
else{cancelHide(oMenu);
}}
function hideMenu(oMenu){if(current==oMenu&&oMenu.isOpen){if(!oMenu.hideTimer)scheduleHide(oMenu);
}}
function scheduleHide(oMenu){oMenu.onqueue();
oMenu.hideTimer=window.setTimeout("TransMenuSet.registry["+_this.index+"].hide(TransMenu.registry["+oMenu.index+"])",TransMenu.hideDelay);
}
function cancelHide(oMenu){if(oMenu.hideTimer){oMenu.ondequeue();
window.clearTimeout(oMenu.hideTimer);
oMenu.hideTimer=null;
}}
function hide(oMenu){if(!oMenu&&current)oMenu=current;
if(oMenu&&current==oMenu&&oMenu.isOpen){hideCurrent();
}}
function hideCurrent(){if (null != current){cancelHide(current);
current.hideTimer=null;
current.hide();
current=null;
}}}
function TransMenuItem(sText,sUrl,oParent){this.toString=toString;
this.text=sText;
this.url=sUrl;
this.parentMenu=oParent;


function toString(bDingbat,id){var sDingbat=bDingbat?TransMenu.dingbatOff:TransMenu.spacerGif;
var iEdgePadding=TransMenu.itemPadding+TransMenu.menuPadding;
var sPaddingLeft="padding:"+TransMenu.itemPadding+"px; padding-left:"+iEdgePadding+"px;"
var sPaddingRight="padding:"+TransMenu.itemPadding+"px; padding-right:"+iEdgePadding+"px;"
sText=sText.toUpperCase();
return'<tr class="item"><td nowrap style="'+sPaddingLeft+'" onMouseOver="this.className=\''+id+'hover\';" onMouseOut="this.className=\'item\'">'+sText+'</td></tr>';
}}
function Accelimation(from,to,time,zip){if(typeof zip=="undefined")zip=0;
if(typeof unit=="undefined")unit="px";
this.x0=from;
this.x1=to;
this.dt=time;
this.zip=-zip;
this.unit=unit;
this.timer=null;
this.onend=new Function();
this.onframe=new Function();
}
Accelimation.prototype.start=function(){this.t0=new Date().getTime();
this.t1=this.t0+this.dt;
var dx=this.x1-this.x0;
this.c1=this.x0+((1+this.zip)*dx/3);
this.c2=this.x0+((2+this.zip)*dx/3);
Accelimation._add(this);
}
Accelimation.prototype.stop=function(){Accelimation._remove(this);
}
Accelimation.prototype._paint=function(time){if(time<this.t1){var elapsed=time-this.t0;
this.onframe(Accelimation._getBezier(elapsed/this.dt,this.x0,this.x1,this.c1,this.c2));
}
else this._end();
}
Accelimation.prototype._end=function(){Accelimation._remove(this);
this.onframe(this.x1);
this.onend();
}
Accelimation._add=function(o){var index=this.instances.length;
this.instances[index]=o;
if(this.instances.length==1){this.timerID=window.setInterval("Accelimation._paintAll()",this.targetRes);
}}
Accelimation._remove=function(o){for(var i=0;
i<this.instances.length;
i++){if(o==this.instances[i]){this.instances=this.instances.slice(0,i).concat(this.instances.slice(i+1));
break;
}}
if(this.instances.length==0){window.clearInterval(this.timerID);
this.timerID=null;
}}
Accelimation._paintAll=function(){var now=new Date().getTime();
for(var i=0;
i<this.instances.length;
i++){this.instances[i]._paint(now);
}}
Accelimation._B1=function(t){return t*t*t}
Accelimation._B2=function(t){return 3*t*t*(1-t)}
Accelimation._B3=function(t){return 3*t*(1-t)*(1-t)}
Accelimation._B4=function(t){return(1-t)*(1-t)*(1-t)}
Accelimation._getBezier=function(percent,startPos,endPos,control1,control2){return endPos*this._B1(percent)+control2*this._B2(percent)+control1*this._B3(percent)+startPos*this._B4(percent);
}
Accelimation.instances=[];
Accelimation.targetRes=10;
Accelimation.timerID=null;

if(window.attachEvent){var cearElementProps=['data','onmouseover','onmouseout','onmousedown','onmouseup','ondblclick','onclick','onselectstart','oncontextmenu'];
window.attachEvent("onunload", function() {var el;
for(var d=document.all.length;
d--;
){el=document.all[d];
for(var c=cearElementProps.length;
c--;
){el[cearElementProps[c]] = null;
}}});
}
