//-----> Preload images

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

//-----> Swap images 

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  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=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function CheckFocus() {
	self.focus();
}


/** This is high-level function.

 * It must react to delta being more/less than zero.

 */


/*
function handle(delta) {

        if (delta < 0)

        …;

        else

        …;

}
*/


/** Event handler for mouse wheel event.

 */

function wheel(event){

        var delta = 0;

        if (!event) /* For IE. */

                event = window.event;

        if (event.wheelDelta) { /* IE/Opera. */

                delta = event.wheelDelta/120;

                /** In Opera 9, delta differs in sign as compared to IE.

                 */

                if (window.opera)

                        delta = -delta;

        } else if (event.detail) { /** Mozilla case. */

                /** In Mozilla, sign of delta is different than in IE.

                 * Also, delta is multiple of 3.

                 */

                delta = -event.detail/3;

        }

        /** If delta is nonzero, handle it.

         * Basically, delta is now positive if wheel was scrolled up,

         * and negative, if wheel was scrolled down.

         */

        if (delta)

                handle(delta);

}



/** Initialization code. 

 * If you use your own event management code, change it as required.

 */

if (window.addEventListener)

        /** DOMMouseScroll is for mozilla. */

        window.addEventListener('DOMMouseScroll', wheel, false);

/** IE/Opera. */

window.onmousewheel = document.onmousewheel = wheel;