/*

		dw_core.js

		version date: April 2003

				

		This code is from Dynamic Web Coding 

    at http://www.dyn-web.com/

    Copyright 2001-3 by Sharon Paine 

    See Terms of Use at http://www.dyn-web.com/bus/terms.html

    Permission granted to use this code 

    as long as this entire notice is included.

*/



/////////////////////////////////////////////////////////////////////

//  dynObj constructor

//		arguments: id (required): id of positioned div.

//		left,top,width,height optional arguments.

/////////////////////////////////////////////////////////////////////

function dynObj(id,x,y,w,h) {

	this.el = (document.getElementById)? document.getElementById(id): (document.all)? document.all[id]: (document.layers)? getLyrRef(id,document): null;

	if (!this.el) return null;

	this.doc = (document.layers)? this.el.document: this.el;

	this.css = (this.el.style)? this.el.style: this.el;

	var px = (document.layers||window.opera)? "": "px";

	this.x = x || 0;	if (x) this.css.left = this.x+px;

	this.y = y || 0;	if (y) this.css.top = this.y+px;

	this.width = w? w: (this.el.offsetWidth)? this.el.offsetWidth: (this.css.clip.width)? this.css.clip.width: 0;

	this.height = h? h: (this.el.offsetHeight)? this.el.offsetHeight: (this.css.clip.height)? this.css.clip.height: 0;

	// if w/h passed, set style width/height

	if (w){ (document.layers)? this.css.clip.width=w+px: this.css.width=w+px;}

	if (h){ (document.layers)? this.css.clip.height=h+px: this.css.height=h+px;}

	this.obj = id + "_dynObj"; 	eval(this.obj + "=this");

}



dynObj.prototype.show = function () { this.css.visibility = "visible"; }

dynObj.prototype.hide = function () { this.css.visibility = "hidden"; }



dynObj.prototype.shiftTo = function (x,y) {

	if (x!=null) this.x=x; if (y!=null) this.y=y;	

	// rounded below (this.x/y can hold decimals)

	if (this.css.moveTo) { 

		this.css.moveTo(Math.round(this.x),Math.round(this.y)); 

	} else { 

		this.css.left=Math.round(this.x)+"px"; 

		this.css.top=Math.round(this.y)+"px"; 

	}

}



dynObj.prototype.shiftBy = function (x,y) {

	this.shiftTo(this.x+x,this.y+y);

}



dynObj.prototype.writeLyr = function (cntnt) {

	if (typeof this.doc.innerHTML!="undefined") {

      this.doc.innerHTML = cntnt;

  } else if (document.layers) {

			this.doc.write(cntnt);

			this.doc.close();

  }

}



dynObj.prototype.setBgClr = function (bg) {

	if (document.layers) this.doc.bgColor=bg;

	else this.css.backgroundColor=bg;

}



// get reference to nested layer for ns4

// from dhtmllib.js by Mike Hall of www.brainjar.com

function getLyrRef(lyr,doc) {

	if (document.layers) {

		var theLyr;

		for (var i=0; i<doc.layers.length; i++) {

	  	theLyr = doc.layers[i];

			if (theLyr.name == lyr) return theLyr;

			else if (theLyr.document.layers.length > 0) 

	    	if ((theLyr = getLyrRef(lyr,theLyr.document)) != null)

					return theLyr;

	  }

		return null;

  }

}