//*****************************************************************************
// Do not remove this notice.
//
// Copyright 2001 by Mike Hall.
// See http://www.brainjar.com for terms of use.
//*****************************************************************************

// Determine browser and version.

function Browser() {

  var ua, s, i;

  this.isIE    = false;
  this.isNS    = false;
  this.version = null;

  ua = navigator.userAgent;

  s = "MSIE";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isIE = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  s = "Netscape6/";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  // Treat any other "Gecko" browser as NS 6.1.

  s = "Gecko";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = 6.1;
    return;
  }
}

var browser = new Browser();

// Global object to hold drag information.

var dragObj = new Object();
dragObj.zIndex = 1000;

function dragStart(event, id) {

  var el;
  var x, y;

  // If an element id was given, find it. Otherwise use the element being
  // clicked on.

  if (id)
    dragObj.elNode = document.getElementById(id);
  else {
    if (browser.isIE)
      dragObj.elNode = window.event.srcElement;
    if (browser.isNS)
      dragObj.elNode = event.target;

    // If this is a text node, use its parent element.

    if (dragObj.elNode.nodeType == 3)
      dragObj.elNode = dragObj.elNode.parentNode;
  }

  // Get cursor position with respect to the page.

  if (browser.isIE) {
    x = window.event.clientX + document.documentElement.scrollLeft
      + document.body.scrollLeft;
    y = window.event.clientY + document.documentElement.scrollTop
      + document.body.scrollTop;
  }
  if (browser.isNS) {
    x = event.clientX + window.scrollX;
    y = event.clientY + window.scrollY;
  }

  // Save starting positions of cursor and element.

  dragObj.cursorStartX = x;
  dragObj.cursorStartY = y;
  dragObj.elStartLeft  = parseInt(dragObj.elNode.style.left, 10);
  dragObj.elStartTop   = parseInt(dragObj.elNode.style.top,  10);

  if (isNaN(dragObj.elStartLeft)) dragObj.elStartLeft = 0;
  if (isNaN(dragObj.elStartTop))  dragObj.elStartTop  = 0;

  // Update element's z-index.

  dragObj.elNode.style.zIndex = ++dragObj.zIndex;

  // Capture mousemove and mouseup events on the page.

  if (browser.isIE) {
    document.attachEvent("onmousemove", dragGo);
    document.attachEvent("onmouseup",   dragStop);
    window.event.cancelBubble = true;
    window.event.returnValue = false;
  }
  if (browser.isNS) {
    document.addEventListener("mousemove", dragGo,   true);
    document.addEventListener("mouseup",   dragStop, true);
    event.preventDefault();
  }
}

function dragGo(event) {

  var x, y;

  // Get cursor position with respect to the page.

  if (browser.isIE) {
    x = window.event.clientX + document.documentElement.scrollLeft
      + document.body.scrollLeft;
    y = window.event.clientY + document.documentElement.scrollTop
      + document.body.scrollTop;
  }
  if (browser.isNS) {
    x = event.clientX + window.scrollX;
    y = event.clientY + window.scrollY;
  }

  // Move drag element by the same amount the cursor has moved.

  dragObj.elNode.style.left = (dragObj.elStartLeft + x - dragObj.cursorStartX) + "px";
  dragObj.elNode.style.top  = (dragObj.elStartTop  + y - dragObj.cursorStartY) + "px";

  if (browser.isIE) {
    window.event.cancelBubble = true;
    window.event.returnValue = false;
  }
  if (browser.isNS)
    event.preventDefault();
}

function dragStop(event) {

  // Stop capturing mousemove and mouseup events.

  if (browser.isIE) {
    document.detachEvent("onmousemove", dragGo);
    document.detachEvent("onmouseup",   dragStop);
  }
  if (browser.isNS) {
    document.removeEventListener("mousemove", dragGo,   true);
    document.removeEventListener("mouseup",   dragStop, true);
  }
}

function expandCollapse() {
	for (var i=0; i<expandCollapse.arguments.length; i++) {
		var element = document.getElementById( expandCollapse.arguments[i] );
		element.style.display = (element.style.display == "none" || element.style.display == "" ) ? "block" : "none";
	}
}

function collapse() {
	for (var i=0; i<collapse.arguments.length; i++) {
		var element = document.getElementById( collapse.arguments[i] );
		element.style.display = "none";
	}
}

function expand() {
	for (var i=0; i<expand.arguments.length; i++) {
		var element = document.getElementById( expand.arguments[i] );
		element.style.display = "block";
	}
}

// Temporary Debugging

function showValue(val,r,c,ww,wh){
	var args = parseArgs(showValue.arguments)
	var sh = screen.availHeight; var sw = screen.availWidth; var ww = (args.w) ? args.w : 1000; var wh = (args.h) ? args.h : 640
	var html = "<html><head><title>" + ((args.title) ? args.title : "Show Value") + "</title></" + "head>"
	html += "<body bgcolor=\"#ffffff\"><form name=\"disp\">"
	html +=	"<textarea id=\"textval\" name=\"showtext\" rows=\"" + ((args.r) ? args.r : "24") + "\" cols=\"" + ((args.c) ? args.c : "81") + "\"></" + "textarea></" + "form>"
	html += "</" + "body></" + "html>"
	// handle popup blockers
	try{
		var newWin = SymRealWinOpen("","","height=" + wh + ",width=" + ww + ",resizable") 
	} catch(e) {
		var newWin = window.open("","","height=" + wh + ",width=" + ww + ",resizable") 
	}
	newWin.document.write(html)
	newWin.moveTo(parseInt((sw - ww)/2),parseInt((sh - wh)/2)-20)
	newWin.document.close()
	newWin.disp.showtext.value = (args.val) ? args.val : val //: "Error: need to sepicify a value to display"
	return newWin
}

function parseArgs(fArgs){// returns a labelled array of arguments passed to a function, separate label from value with :
	var args = new Object()
	for (var i = 0; i < fArgs.length; i++){
		var a = fArgs[i]
		if(typeof a == "string"){
			args[a.slice(0,a.indexOf(":"))] = a.slice(a.indexOf(":") + 1)
		} else {
			args[a.name] = a.obj
		}
	}
	if(args.toLabelledParams && args.args){
		return argsToStrHead(args.args)
	}
	if(args.args){return args.args}
	return args
}

function showProps(obj,objName,show,typ,ret){
	//disabled in Snap's copy by KD to get rid of error popup on fileupload.
	//return;
	var result = ""; var tof = ""
	for (var i in obj){
		result += objName + "." + i + " = " + obj[i] + "\n"
		tof += i + " = " + typeof obj[i] + "\n"
	}
	if(typ){
		try{top.showValue(tof)}catch(e){top.opener.top.showValue(tof)}
	}
	if(ret){
		return result
	} else if(show){
		try{showValue(result)}catch(e){top.showValue(result)}
	} else {
		alert(result)
	}
}