/* ========================================================================
    common.js written by Simon Holmes, Design Motive
    Copyright 2002 Design Motive Ltd
	http://www.designmotive.co.uk/
   ======================================================================== */ 


// DEFINE GLOBAL VARIABLES AND SET UP SOME STANDARD DOM VAR'S
var showh, showv, structure, viseq, lyr, busy, doit, closingb, active;
plat = ((navigator.platform.indexOf('Win') > -1) ? "win" : "mac");
browse = navigator.appName;
docimg = "document.images.";
showh = "'hidden'";
showv = "'visible'";
busy = 0;
closingb = "";
active = null;


// SELECT THE DOM OF THE BROWSER AND DEFINE VARIABLES
var g3 = (document.getElementById);         // will be true if it's IE5+, Netscape6+
var ns = (document.layers);                 // will be true if it's Netscape 4
var ie = (document.all);                    // will be true if it's IE
if (g3)
{
 structure = "document.getElementById('";
 viseq = "').style.visibility = ";
 nslyr = ""
 ns = false;                                // set these to false so that it uses the W3C standard DOM
 ie = false;                                // in case the browser can handle two type of dhtml
 closingb = "')";
}
if (ie)
{
 structure = "document.all.";
 viseq = ".style.visibility=";
 nslyr = "";
}
if (ns)
{
 structure = "document.layers.";
 viseq = ".visibility=";
}

function preloadNavImages(strSection,imgName)
{
 eval(imgName+"_off = new Image(20,18); " + imgName + "_off.src=\"/images/nav/" + strSection + "/" + imgName + "_off.gif\";");
 eval(imgName+"_on = new Image(20,18); " + imgName + "_on.src=\"/images/nav/" + strSection + "/" + imgName + "_on.gif\";");
}

function fnPicChange(imgname,state,lyrid)
{
 args = fnPicChange.arguments;
 var strState = ((state == 1) ? "_on" : "_off");
 pic = imgname + ".src=" + imgname + strState + ".src";
 if (args.length == 3 && (ns)) {nslyr = "document.layers." + args[2] + ".";}
 else {nslyr = ""}
 eval(nslyr + docimg + pic);
}

function fnIconChange(imgname,state,type,lyrid)
{
 args = fnIconChange.arguments;
 var strState = ((state == 1) ? "_on" : "_off");
 pic = imgname + ".src=" + type + strState + ".src";
 if (args.length == 4 && (ns)) {nslyr = "document.layers." + args[3] + ".";}
 else {nslyr = ""}
 eval(nslyr + docimg + pic);
}

function testLayer(id)
{
 test = eval(structure +id + closingb);
 if (!test) {return false;}
 return true;
}

function showHideLayer(lyrid,state)
{
 if (!testLayer(lyrid)) {return false;}
 var strVis = ((state == 1) ? showv : showh);
 eval(structure + lyrid + viseq + strVis)
}

var my_w = 800;
var my_h = 600;
if (screen.width) {my_w = screen.width;}
if (screen.height) {my_h = screen.height;}


function showPopup(theURL,winwidth,winheight)
{
 winheight += 75
 if ((winheight > 540) && (my_h <= 600)) {winheight = 540;}
 if ((winwidth > 770) && (my_w <= 800)) {winwidth = 770;}
 var resizeHeight = winheight;
 var resizeWidth = winwidth+6;
 if (plat=="win")
 {
  resizeHeight+=56;
  if (document.all){resizeWidth = winwidth+27;}
  else {resizeWidth = winwidth+20;}
 }
 var intWinTop = parseInt((my_h-winheight) / 2);
 var intWinLeft = parseInt((my_w-winwidth) / 2);
 intWinTop -= 35;
 if (intWinTop<0) {intWinTop = 0;}
 intWinLeft -= 10;
 if (intWinLeft<0) {intWinLeft = 0;}
 DuboisPopup = window.open(theURL,"DuboisPopup","width="+winwidth+",height="+winheight+",top="+intWinTop+",left="+intWinLeft+",resizable=no,scrollbars=yes,status=no,location=no,menubar=yes");
 if (g3)
 {
  DuboisPopup.resizeTo(resizeWidth,resizeHeight);
  DuboisPopup.moveTo(intWinLeft,intWinTop);
 }
 DuboisPopup.opener = self;
 DuboisPopup.focus();
}

function showTimeline()
{
 TimelineWindow = window.open("Timeline.htm","Timeline","width=730,height=416,resizable=no,scrollbars=yes,status=no,location=no,menubar=no");
 TimelineWindow.opener = self;
 TimelineWindow.focus();
}

function showArrangementWin()
{
 showPopup('/NoArrangement.asp',400,150)
}