/* Extension written by David G. Miles (http://www.z3roadster.net/dreamweaver/) 
based in part on code written by Thomas Brattli (http://www.bratta.com)*/
// Courtesy of SimplytheBest.net (http://simplythebest.net/info/dhtml_scripts.html)

function verifyCompatibleBrowser(){ 
    this.ver=navigator.appVersion 
    this.dom=document.getElementById?1:0 
    this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0; 
    this.ie4=(document.all && !this.dom)?1:0; 
    this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
    this.ns4=(document.layers && !this.dom)?1:0; 
    this.bw=(this.ie5 || this.ie4 || this.ns4 || this.ns5) 
    return this 
} 
bw=new verifyCompatibleBrowser() 
  
var speed=50 
var loop, timer 
 
function ConstructObject(obj,nest){ 
    nest=(!nest) ? '':'document.'+nest+'.' 
    this.el=bw.dom?document.getElementById(obj):bw.ie4?document.all[obj]:bw.ns4?eval(nest+'document.'+obj):0; 
    this.css=bw.dom?document.getElementById(obj).style:bw.ie4?document.all[obj].style:bw.ns4?eval(nest+'document.'+obj):0;
    this.scrollHeight = bw.ns4 ? this.css.document.height : this.el.offsetHeight;
    this.clipHeight = bw.ns4 ? this.css.clip.height : this.el.offsetHeight; 
    this.up=MoveAreaUp;this.down=MoveAreaDown; 
    this.MoveArea=MoveArea; this.x; this.y;
    this.obj = obj + "Object";
    eval(this.obj + "=this"); 
    return this 
} 
function MoveArea(x,y){ 
    this.x=x;this.y=y 
    this.css.left=this.x 
    this.css.top=this.y 
} 
function MoveAreaDown(move){ 
	if(this.y>-this.scrollHeight+objContainer.clipHeight){ 
    this.MoveArea(0,this.y-move) 
    if(loop) setTimeout(this.obj+".down("+move+")",speed) 
	} 
} 
function MoveAreaUp(move){
    if (this.y < 0) {
    this.MoveArea(0, this.y - move)
    if (loop) setTimeout(this.obj + ".up(" + move + ")", speed)
    }
} 
function PerformScroll(speed){ 
	if(initialised){ 
		loop=true; 
		if(speed>0) objScroller.down(speed) 
		else objScroller.up(speed) 
	} 
} 
function CeaseScroll(){ 
    loop=false 
    if(timer) clearTimeout(timer) 
} 
var initialised; 
function InitialiseScrollableArea(){ 
    objContainer=new ConstructObject('divContainer','') 
    objScroller=new ConstructObject('divContent','divContainer') 
    objScroller.MoveArea(0,0) 
    objContainer.css.visibility='visible' 
    initialised=true; 
} 

function displayStatusMsg(msgStr) { 
  status=msgStr;
  document.returnValue = true;
}

function preloadImages() {
    var d = document;
    if (d.images) {
        if (!d.p)
            d.p = new Array(); 
            var i, j = d.p.length, a = preloadImages.arguments; 
            for(i=0; i<a.length; i++)
                if (a[i].indexOf("#") != 0) {
                    d.p[j] = new Image; 
                    d.p[j++].src = a[i];
                    }
    }
}

function swapImgRestore() { 
  var i,x,a=document.sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function findObj(n, d) {
  var p, i, x; if (!d) d = document; 
  if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if (!(x = d[n]) && d.all) x = d.all[n]; 
        for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
        for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document); return x;
}

function swapImage()
{
  var i, j = 0, x, a = swapImage.arguments; 
  document.sr = new Array; 
  for(i = 0; i < (a.length/4); i++)
    if ((x = findObj (a[i*4])) != null)
   	  {
	    document.sr[j++] = x;
	    if(!x.oSrc) x.oSrc = x.src;
	    x.src = a[i * 4 + 2];
	  }
}
//