/**********************************************************************************   
PageSlide 
*   Copyright (C) 2001 <a href="/dhtmlcentral/michael_van_ouwerkerk.asp">Michael van Ouwerkerk</a>
*   This script was released at DHTMLCentral.com
*   Visit for more great scripts!
*   This may be used and changed freely as long as this msg is intact!
*   We will also appreciate any links you could give us.
*
*   Made by <a href="/dhtmlcentral/michael_van_ouwerkerk.asp">Michael van Ouwerkerk</a> 
*********************************************************************************/
var pageslidefadeLoaded = 0;
var	scroller=new Array();
var pages=new Array();

function lib_bwcheck(){ //Browsercheck (needed)
        this.ver=navigator.appVersion
        this.agent=navigator.userAgent
        this.dom=document.getElementById?1:0
        this.opera5=this.agent.indexOf("Opera 5")>-1
        this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0; 
        this.ie6=((this.ver.indexOf("MSIE 6")>-1 || (this.ver.indexOf("MSIE")>-1 && !this.ie5))&& this.dom && !this.opera5)?1:0;
        this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
        this.ie=this.ie4||this.ie5||this.ie6
        this.mac=this.agent.indexOf("Mac")>-1
        this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
        this.ns4=(document.layers && !this.dom)?1:0;
        this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5)
        return this
}
var bw=new lib_bwcheck()



var numScrollPages = 1;         //Set the number of pages (layers) here. Add and remove the pages in the body too. The first layer is called dynPage0, the second is dynPage1, and so on.
var transitionOut = 1;         //The 'out' effect... 0= no effect, 1= fade
var transitionIn = 2;          //The 'in' effect... 0= no effect, 1= fade, 2= slide
var slideAcceleration = 0.2;   //If you use the slide animation, set this somewhere between 0 and 1.
var transitionOnload = 1       //Use the 'in' transition when the page first loads? If you want the transition fx only when the links are clicked, you can set it to 0.

// NOTE: if you change the position of divScroller1 from absolute to relative, you can put the scroller in a table.
// HOWEVER it will no longer work in netscape 4. If you wish to support netscape 4, you have to use absolute positioning.

// Please note that there are no effects available in ns4 and ie4, or explorers on the Mac!

/*** There should be no need to change anything beyond this. ***/ 

// A unit of measure that will be added when setting the position of a layer.
var px = bw.ns4||window.opera?"":"px";

if(document.layers){ //NS4 resize fix...
        scrX= innerWidth; scrY= innerHeight;
        onresize= function(){if(scrX!= innerWidth || scrY!= innerHeight){history.go(0)} }
}

//object constructor...
function scrollerobj(obj,nest){
        nest = (!nest)?"":'document.'+nest+'.'
        this.elm = bw.ie4?document.all[obj]:bw.ns4?eval(nest+'document.'+obj):document.getElementById(obj)
        this.css = bw.ns4?this.elm:this.elm.style
        this.doc = bw.ns4?this.elm.document:document
        this.obj = obj+'scrollerobj'; eval(this.obj+'=this')
        this.x = (bw.ns4||bw.opera5)?this.css.left:this.elm.offsetLeft
        this.y = (bw.ns4||bw.opera5)?this.css.top:this.elm.offsetTop
        this.w = (bw.ie4||bw.ie5||bw.ie6||bw.ns6)?this.elm.offsetWidth:bw.ns4?this.elm.clip.width:bw.opera5?this.css.pixelWidth:0
        this.h = (bw.ie4||bw.ie5||bw.ie6||bw.ns6)?this.elm.offsetHeight:bw.ns4?this.elm.clip.height:bw.opera5?this.css.pixelHeight:0
}

//object methods...
scrollerobj.prototype.moveTo = function(x,y){
        if(x!=null){this.x=x; this.css.left=x+px}
        if(y!=null){this.y=y; this.css.top=y+px}
}
scrollerobj.prototype.moveBy = function(x,y){this.moveTo(this.x+x,this.y+y)}
scrollerobj.prototype.hideIt = function(){this.css.visibility='hidden'}
scrollerobj.prototype.showIt = function(){this.css.visibility='visible'}

/****************************************************************
scroll functions...
****************************************************************/
var scrollTimer = null;
function scroll(step,slider){
		clearTimeout(scrollTimer);
		activePage=pages[slider][0];
        if ( !busy &&(step<0&&activePage.y+activePage.h>scroller[slider].h || step>0&&activePage.y<0) ){
                activePage.moveBy(0,step);
                scrollTimer = setTimeout('scroll('+step+','+slider+')',40);
        }
}
function stopScroll(){
        clearTimeout(scrollTimer);
}

/****************************************************************
activating the correct layers...
****************************************************************/
var activePage = null;
var busy = 0;
function activate(num,slider){
        if (activePage!=pages[slider][num] && !busy){
                busy = 1;
                if (transitionOut==0 || !bw.opacity){ activePage.hideIt(); activateContinue(num); }
                else if (transitionOut==1) activePage.blend('hidden', 'activateContinue('+num+','+slider+')');
        }
}
function activateContinue(num,slider){
        busy = 1;
        activePage = pages[slider][num];
        activePage.moveTo(0,0);
        if (transitionIn==0 || !bw.opacity){ activePage.showIt(); busy=0; }
        else if (transitionIn==2) {  activePage.slide(0, slideAcceleration, 40, 'busy=0',slider);};
}


/****************************************************************
Slide methods...
****************************************************************/
scrollerobj.prototype.slide = function(target, acceleration, time, fn,slider){
        this.slideFn= fn?fn:null;
        this.moveTo(0,scroller[slider].h);
        if (bw.ie4&&!bw.mac) this.css.filter = 'alpha(opacity=100)';
        if (bw.ns6) this.css.MozOpacity = 1;
        this.showIt();
        this.doSlide(target, acceleration, time,slider);
}
scrollerobj.prototype.doSlide = function(target, acceleration, time,slider){
		this.step = Math.round(this.y*acceleration);
        if (this.step<1) this.step = 1;
        if (this.step>this.y) this.step = this.y;
        this.moveBy(0, -this.step);
        if (this.y>0) {
			this.slideTim = setTimeout(this.obj+'.doSlide('+target+','+acceleration+','+time+','+slider+')', time);
		}  else {  
                eval(this.slideFn);
                this.slideFn = null;
        }
}


/**************************************************************
Init function...
**************************************************************/
function initPageSlideFade(numberOfSliders,startCount){
	for(var j=startCount; j<numberOfSliders; j++) {
		scroller[j] = new scrollerobj('divScroller'+j);

		pages[j] = new Array();
		for (var i=0; i<numScrollPages; i++){
				pages[j][i] = new scrollerobj('dynPage'+i+'_'+j, 'divScroller'+j);
				pages[j][i].moveTo(0,0);
		}
		bw.opacity = ( bw.ie && !bw.ie4 && navigator.userAgent.indexOf('Windows')>-1 ) || bw.ns6
		
		if (transitionOnload) activateContinue(0,j);
		else{
				activePage = pages[j][0];
				activePage.showIt();
		}

		if (bw.ie) for(var i=0;i<document.links.length;i++) document.links[i].onfocus=document.links[i].blur;
		pageslidefadeLoaded = 1;
	}
}
//if the browser is ok, the script is started onload..
if(bw.bw && !pageslidefadeLoaded) onload = initPageSlideFade;
//-->