/*************************************************************************
  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 when including scrollbars: dw_scroll-aux.js and dw_slidebar.js
*/

/*  Readable code available for licensed users */

dw_scrollObjs = {};
dw_scrollObj.speed=200;

function dw_scrollObj(wnId,lyrId,type,cntId){
	this.sType = type;
	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){
	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;
	if (this.sType=="body") {
		if(document.getElementById('scrollbar')) {
			wndo.className = 'scrolloff';
			wndo.className = (lyr.offsetHeight > wndo.offsetHeight) ? 'scrollon' : 'scrolloff';
			document.getElementById('scrollbar').style.visibility = (wndo.className=='scrollon') ? 'visible' : 'hidden';
		}
		if(this.id == 'pane1') {
			wndo.className = 'scrolloff-top';
			wndo.className = (lyr.offsetHeight > wndo.offsetHeight) ? 'scrollon-top' : 'scrolloff-top';
			document.getElementById('scrollbar1').style.visibility = (wndo.className=='scrollon-top') ? 'visible' : 'hidden';
		}
		if(this.id == 'pane2') {
			wndo.className = 'scrolloff-bottom';
			wndo.className = (lyr.offsetHeight > wndo.offsetHeight) ? 'scrollon-bottom' : 'scrolloff-bottom';
			document.getElementById('scrollbar2').style.visibility = (wndo.className=='scrollon-bottom') ? 'visible' : 'hidden';
		}

	}
	
	if (this.sType=="nav") {
				var oPane = wndo;
				var oParent = wndo.parentNode;
		
		var oPageScroll = document.getElementById('page-nav-scroll');
		if(oPageScroll) {
			oPageScroll.style.visibility = (lyr.offsetHeight > wndo.offsetHeight) ? 'visible' : 'hidden';
			if (oPageScroll.style.visibility=='visible') {
			
				
				var oButtonUp = document.getElementById('page-nav-scroll-up');
				oButtonUp.style.left = '0px';
				oButtonUp.style.top = '0px';
				oButtonUp.style.width = oParent.offsetWidth+'px';
				
				var oButtonDn = document.getElementById('page-nav-scroll-dn');
				oButtonDn.style.left = '0px'
				oButtonDn.style.top = oParent.offsetHeight - oButtonDn.offsetHeight+'px';
				oButtonDn.style.width = oParent.offsetWidth+'px';
				
				oPane.style.height = oParent.offsetHeight - (oButtonUp.offsetHeight + oButtonDn.offsetHeight)+'px';
				oPane.style.left = '0px';
				oPane.style.top = document.getElementById('page-nav-scroll-up').offsetHeight+'px';
			} else {
	
				oPane.style.height = oParent.offsetHeight+'px';
				oPane.style.left = '0px';
				oPane.style.top = '0px';
			
			}
		}
		
	}
	
	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;

};
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_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_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";}}};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};};