dlm_objLinks = {};
dlm_objLink.durOfSlide = 500;
//dlm_startXscroll=0;

function dlm_objLink(wnId,lyrId,cntId) {
	this.id=wnId;
	dlm_objLinks[this.id]=this;
	this.animString="dlm_objLinks."+this.id;
	this.load(lyrId,cntId);
};
dlm_objLink.loadLayer=function(wnId,id,cntId) {
	if(dlm_objLinks[wnId])dlm_objLinks[wnId].load(id,cntId);
};
dlm_objLink.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=dlm_startXscroll;
	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;
};
dlm_objLink.prototype.on_load=function(){};
dlm_objLink.prototype.shiftTo=function(lyr,x,y){
	if(!lyr.style)return;
	lyr.style.left=(this.x=x)+"px";
	lyr.style.top=(this.y=y)+"px";
};
dlm_objLink.GeckoTableBugFix=function(){
	var ua=navigator.userAgent;
	if(ua.indexOf("Gecko")>-1&&ua.indexOf("Firefox")==-1&&ua.indexOf("Safari")==-1&&ua.indexOf("Konqueror")==-1){
		dlm_objLink.hold=[];
		for(var i=0;arguments[i];i++){
			if(dlm_objLinks[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";
				dlm_objLink.hold[i]=[arguments[i],holderId];
			}
		}
		window.addEventListener("resize",dlm_objLink.rePositionGecko,true);
	}
};
dlm_objLink.rePositionGecko=function(){
	if(dlm_objLink.hold){
		for(var i=0;dlm_objLink.hold[i];i++){
			var wndo=document.getElementById(dlm_objLink.hold[i][0]);
			var holder=document.getElementById(dlm_objLink.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};
};

dlm_objLink.scrollBy = function(wnId, x, y, dur) {
	if ( dlm_objLinks[wnId] ) dlm_objLinks[wnId].glideBy(x, y, dur);
}

dlm_objLink.scrollTo = function(wnId, x, y, dur) {
	if ( dlm_objLinks[wnId] ) dlm_objLinks[wnId].glideTo(x, y, dur);
}

dlm_objLink.prototype.glideBy = function(dx, dy, dur) {
	if ( !document.getElementById || this.sliding ) return;
	this.durOfSlide = dur || dlm_objLink.durOfSlide;
	this.destX = this.destY = this.distX = this.distY = 0;
	this.lyr = document.getElementById(this.lyrId);
	this.startX = this.x; this.startY = this.y;
	if (dy < 0) this.distY = (this.startY + dy >= -this.maxY)? dy: -(this.startY  + this.maxY);
	else if (dy > 0) this.distY = (this.startY + dy <= 0)? dy: -this.startY;
	if (dx < 0) this.distX = (this.startX + dx >= -this.maxX)? dx: -(this.startX + this.maxX);
	else if (dx > 0) this.distX = (this.startX + dx <= 0)? dx: -this.startX;
	this.destX = this.startX + this.distX; this.destY = this.startY + this.distY;
	this.slideTo(this.destX, this.destY);
}

dlm_objLink.prototype.glideTo = function(destX, destY, dur) {
	if ( !document.getElementById || this.sliding) return;
	this.durOfSlide = dur || dlm_objLink.durOfSlide;
	this.lyr = document.getElementById(this.lyrId);
	this.startX = this.x; this.startY = this.y;
	this.destX = -Math.max( Math.min(destX, this.maxX), 0);
	this.destY = -Math.max( Math.min(destY, this.maxY), 0);
	this.distY = this.destY - this.startY;
	this.distX =  this.destX - this.startX;
	this.slideTo(this.destX, this.destY);
}

dlm_objLink.prototype.slideTo = function(destX, destY) {
	this.per = Math.PI/(2 * this.durOfSlide); this.sliding = true;
	this.slideStart = (new Date()).getTime();
	this.aniTimer = setInterval(this.animString + ".doSlide()",10);
	this.on_slide_start(this.startX, this.startY);
}

dlm_objLink.prototype.doSlide = function() {
	var elapsed = (new Date()).getTime() - this.slideStart;
	if (elapsed < this.durOfSlide) {
		var x = this.startX + this.distX * Math.sin(this.per*elapsed);
		var y = this.startY + this.distY * Math.sin(this.per*elapsed);
		this.shiftTo(this.lyr, x, y); this.on_slide(x, y);
	} else {
		clearInterval(this.aniTimer); this.sliding = false;
		this.shiftTo(this.lyr, this.destX, this.destY);
		this.lyr = null; this.on_slide_end(this.destX, this.destY);
	}
}

dlm_objLink.prototype.on_slide_start = function() {}
dlm_objLink.prototype.on_slide = function() {}
dlm_objLink.prototype.on_slide_end = function() {}

function initScroll() {
	var wndo = new dlm_objLink("dlm_win", "dlm_lyr", "dlm_table");
	dlm_objLink.GeckoTableBugFix("dlm_win");
}
onload=initScroll;