/* 
    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||!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};
};

var dw_Inf={};

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

dw_scrollObj.scrdy=true;