/******************************
HANDLEBAR SLIDER
******************************/
/* slider functions */
// mouse wheel code from http://adomas.org/javascript-mouse-wheel/
function handle(delta, slider) {
	slider.setValueBy(-delta);
}
/** Event handler for mouse wheel event. */
function wheel(event, slider){
	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, slider);

	/** Prevent default actions caused by mouse wheel.
	* That might be ugly, but we handle scrolls somehow
	* anyway, so don't bother here..
	*/
	if (event.preventDefault)
		event.preventDefault();
	
	event.returnValue = false;
}
// scroll the element vertically based on its width and the slider maximum value
function scrollVertical(value, element, slider) {
	element.scrollTop = Math.round(value/slider.maximum*(element.scrollHeight-element.offsetHeight));
}

//loads a page with an individual slider on that page
//this uses prototype.js and slider.js
function loadSlider(id1, track1, handle1) {
	if (id1!=undefined&& id1!="") {
		// vertical slider control
		var slider1 = new Control.Slider(handle1, track1, {
			axis: 'vertical',
			range: $R(0,20),
			onSlide: function(v) { scrollVertical(v, $(id1), slider1);  },
			onChange: function(v) { scrollVertical(v, $(id1), slider1); }
		});
		
		// hide scrollbar  feature
		if ($(id1).scrollHeight <= $(id1).offsetHeight) {
			slider1.setDisabled();
			$(track1).hide();
			if (id1=="slider_body") { 
				$(id1).style.width="205px";
			} else { 
				$(id1).style.width="350px";
			}
		}
		
		Event.observe(id1, 'DOMMouseScroll', function(e){wheel(e, slider1)}); // mozilla
		Event.observe(id1, 'mousewheel', function(e){wheel(e, slider1)}); // IE/Opera
	}

}


//preload stuff
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];}}
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

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];}
}