window.onload = function() {
   if (document && document.getElementsByTagName) {
 var head = document.getElementsByTagName('head')[0];
 var link = document.createElement('link');
 link.type = 'text/css';
 link.rel = 'stylesheet';
 link.href = '/_CSS/ewi2_crossFader.css';
 head.appendChild(link);
   }
};


/* This script and many more are available free online at
The JavaScript Source!! http://javascript.internet.com
Created by: Timothy Groves | http://www.brandspankingnew.net/ */
    var useBSNns;

    if (useBSNns) {
        if (typeof(bsn) == "undefined")
            bsn = {}
	        var _bsn = bsn;
    } else {
        var _bsn = this;
    }


    _bsn.Crossfader = function (divs, fadetime, delay ) {	
        this.nAct = -1;
        this.aDivs = divs;

        for (var i=0;i<divs.length;i++) {
            document.getElementById(divs[i]).style.opacity = 0;
            document.getElementById(divs[i]).style.position = "absolute";
            //document.getElementById(divs[i]).style.filter = "alpha(opacity=0)";
            document.getElementById(divs[i]).style.visibility = "hidden";
        }

        this.nDur = fadetime;
        this.nDelay = delay;
        this._newfade();
    }


    _bsn.Crossfader.prototype._newfade = function() {
        if (this.nID1)
        clearInterval(this.nID1);
        this.nOldAct = this.nAct;
        this.nAct++;

        if (!this.aDivs[this.nAct])	this.nAct = 0;

        if (this.nAct == this.nOldAct)
        return false;

        document.getElementById( this.aDivs[this.nAct] ).style.visibility = "visible";
        this.nInt = 50;
        this.nTime = 0;
        var p=this;
        this.nID2 = setInterval(function() { p._fade() }, this.nInt);
    }


    _bsn.Crossfader.prototype._fade = function() {
        this.nTime += this.nInt;
        var ieop = Math.round( this._easeInOut(this.nTime, 0, 1, this.nDur) * 100 );
        var op = ieop / 100;
        //ieop - used for IE displays between 0 and 100
        //op - used for other browsers displays between 0.01 and 1 (eg. 0.40)
        document.getElementById( this.aDivs[this.nAct] ).style.opacity = op;
        document.getElementById( this.aDivs[this.nAct] ).className = "ewi2_crossfader_" + ieop;

        if (this.nOldAct > -1) {
            document.getElementById( this.aDivs[this.nOldAct] ).style.opacity = 1 - op;
            document.getElementById( this.aDivs[this.nOldAct] ).className = "ewi2_crossfader_"+(100 - ieop);
        }

        if (this.nTime == this.nDur) {
            clearInterval( this.nID2 );

            if (this.nOldAct > -1)
            document.getElementById( this.aDivs[this.nOldAct] ).style.visibility = "hidden";	
            var p=this;
            this.nID1 = setInterval(function() { p._newfade() }, this.nDelay);
        }
    }


    _bsn.Crossfader.prototype._easeInOut = function(t,b,c,d) {
        return c/2 * (1 - Math.cos(Math.PI*t/d)) + b;
    }