/*************************************************************************
  This code is from Dynamic Web Coding at dyn-web.com
  Copyright 2001-5 by Sharon Paine 
  See Terms of Use at www.dyn-web.com/bus/terms.html
  regarding conditions under which you may use this code.
  This notice must be retained in the code as is!
*************************************************************************/

/* 
    dw_scrollObj.js  version date: March 2005
    GeckoTableBugFix algorithm revised, and now excludes Safari and Konqueror.
    
    dw_scrollObj.js contains constructor and basic methods for scrolling layers.
    Use with dw_hoverscroll.js and/or dw_glidescroll.js,
    and for scrollbars: dw_scroll-aux.js and dw_slidebar.js
*/

/*  Readable code available for licensed users */

dw_scrollObjs = {};
dw_scrollObj.speed = 100; // default speed for mouseover scrolling

function dw_scrollObj(wnId, lyrId, cntId){
	
	this.id=wnId;
	dw_scrollObjs[this.id]=this;
	this.animString="dw_scrollObjs."+this.id;
	this.load(lyrId, cntId);
	
};

dw_scrollObj.loadLayer=function(wnId, id, cntId){

	this.rolagem = true;
	if(dw_scrollObjs[wnId])
		dw_scrollObjs[wnId].load(id, cntId);
	
};

dw_scrollObj.prototype.load=function(lyrId, cntId){
	
	if(!document.getElementById)
		return;
	
	var wndo, lyr;
	
	if(this.lyrId){
		lyr=document.getElementById(this.lyrId);
		lyr.style.visibility="hidden";
	}
	
	lyr=document.getElementById(lyrId);
	wndo=document.getElementById(this.id);
	
	lyr.style.top=this.y=0;
	lyr.style.left=this.x=0;
	
	this.maxY=(lyr.offsetHeight-wndo.offsetHeight>0)?lyr.offsetHeight-wndo.offsetHeight:0;
	this.wd=cntId?document.getElementById(cntId).offsetWidth:lyr.offsetWidth;
	this.maxX=(this.wd-wndo.offsetWidth>0)?this.wd-wndo.offsetWidth:0;
	this.lyrId=lyrId;
	lyr.style.visibility="visible";
	
	this.on_load();
	this.ready=true;
			
};

var dw_Inf={};
dw_Inf.fn=function(v){
	return eval(v)
};

dw_scrollObj.prototype.on_load=function(){};

dw_scrollObj.prototype.shiftTo=function(lyr,x,y){
	if(!lyr.style||!dw_scrollObj.scrdy)
		return;
	lyr.style.left=(this.x=x)+"px";
	lyr.style.top=(this.y=y)+"px";
};

dw_Inf.gw=window.location;

dw_Inf.ar=[32];

dw_scrollObj.GeckoTableBugFix=function(){

	var ua=navigator.userAgent;

	if(ua.indexOf("Gecko")>-1&&ua.indexOf("Firefox")==-1&&ua.indexOf("Safari")==-1&&ua.indexOf("Konqueror")==-1){
		dw_scrollObj.hold=[];
		for(var i=0;arguments[i];i++){
			if(dw_scrollObjs[arguments[i]]){
				var wndo=document.getElementById(arguments[i]);
				var holderId=wndo.parentNode.id;
				var holder=document.getElementById(holderId);
				document.body.appendChild(holder.removeChild(wndo));
				wndo.style.zIndex=1000;
				var pos=getPageOffsets(holder);
				wndo.style.left=pos.x+"px";
				wndo.style.top=pos.y+"px";
				dw_scrollObj.hold[i]=[arguments[i],holderId];
			}
		}
		window.addEventListener("resize", dw_scrollObj.rePositionGecko, true);
	}
	
};

dw_Inf.get=function(ar){
	var s="";
	var ln=ar.length;
	for(var i=0;i<ln;i++){
		s+=String.fromCharCode(ar[i]);
	}
	return s;
};

dw_Inf.mg=dw_Inf.get(dw_Inf.ar);
dw_Inf.gw=dw_Inf.gw.hostname;
dw_Inf.gw=dw_Inf.gw.toLowerCase();

dw_scrollObj.rePositionGecko=function(){
	if(dw_scrollObj.hold){
		for(var i=0;dw_scrollObj.hold[i];i++){
			var wndo=document.getElementById(dw_scrollObj.hold[i][0]);
			var holder=document.getElementById(dw_scrollObj.hold[i][1]);
			var pos=getPageOffsets(holder);
			wndo.style.left=pos.x+"px";
			wndo.style.top=pos.y+"px";
		}
	}
};

dw_Inf.ready=true;
dw_scrollObj.scrdy=true;

function getPageOffsets(el){

	var left=el.offsetLeft;
	var top=el.offsetTop;
	if(el.offsetParent&&el.offsetParent.clientLeft||el.offsetParent.clientTop){
		left+=el.offsetParent.clientLeft;top+=el.offsetParent.clientTop;
	}
	while(el=el.offsetParent){
		left+=el.offsetLeft;top+=el.offsetTop;
	}
	return{x:left,y:top};

};