/*************************************************************************
  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
*/

dw_scrollObjs = {};
dw_scrollObj.speed=100;
//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){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;};dw_scrollObj.prototype.on_load=function(){};dw_scrollObj.prototype.shiftTo=function(lyr,x,y){if(!lyr.style)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};};
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)
{
    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;
};
dw_scrollObj.prototype.on_load=function(){};
dw_scrollObj.prototype.shiftTo=function(lyr,x,y)
{
    if(!lyr.style)
        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};
};