/*
Flying Butterfly script (By BGAudioDr@aol.com)
Modified slightly/ permission granted to Dynamic Drive to feature script in archive
For full source, visit http://www.dynamicdrive.com
*/

var Ymax=8;                                //MAX # OF PIXEL STEPS IN THE "X" DIRECTION
var Xmax=8;                                //MAX # OF PIXEL STEPS IN THE "Y" DIRECTION
var Tmax=10000;                        //MAX # OF MILLISECONDS BETWEEN PARAMETER CHANGES

//FLOATING IMAGE URLS FOR EACH IMAGE. ADD OR DELETE ENTRIES. KEEP ELEMENT NUMERICAL ORDER STARTING WITH "0" !!

var floatimages=new Array();
floatimages[0]='images/butterflyPink.gif';
floatimages[1]='images/butterflyPurple.gif';

//*********DO NOT EDIT BELOW***********
var NS4 = (navigator.appName.indexOf("Netscape")>=0 && parseFloat(navigator.appVersion) >= 4 && parseFloat(navigator.appVersion) < 5)? true : false;
var IE4 = (document.all)? true : false;
var NS6 = (parseFloat(navigator.appVersion) >= 5 && navigator.appName.indexOf("Netscape")>=0 )? true: false;
var wind_w, wind_h, t='', IDs=new Array();
for(i=0; i<floatimages.length; i++){
t+=(NS4)?'<layer name="pic'+i+'" visibility="hide" width="10" height="10"><a href="javascript:hidebutterfly()">' : '<div id="pic'+i+'" style="position:absolute; visibility:hidden;width:10px; height:10px"><a href="javascript:hidebutterfly()">';
t+='<img src="'+floatimages[i]+'" name="p'+i+'" border="0">';
t+=(NS4)? '</a></layer>':'</a></div>';
}
document.write(t);

function moveimage(num){
if(getidleft(num)+IDs[num].W+IDs[num].Xstep >= wind_w+getscrollx())IDs[num].Xdir=false;
if(getidleft(num)-IDs[num].Xstep<=getscrollx())IDs[num].Xdir=true;
if(getidtop(num)+IDs[num].H+IDs[num].Ystep >= wind_h+getscrolly())IDs[num].Ydir=false;
if(getidtop(num)-IDs[num].Ystep<=getscrolly())IDs[num].Ydir=true;
moveidby(num, (IDs[num].Xdir)? IDs[num].Xstep :  -IDs[num].Xstep , (IDs[num].Ydir)?  IDs[num].Ystep:  -IDs[num].Ystep);
}

function getnewprops(num){
IDs[num].Ydir=Math.floor(Math.random()*2)>0;
IDs[num].Xdir=Math.floor(Math.random()*2)>0;
IDs[num].Ystep=Math.ceil(Math.random()*Ymax);
IDs[num].Xstep=Math.ceil(Math.random()*Xmax)
setTimeout('getnewprops('+num+')', Math.floor(Math.random()*Tmax));
}

function getscrollx(){
if(NS4 || NS6)return window.pageXOffset;
if(IE4)return document.body.scrollLeft;
}

function getscrolly(){
if(NS4 || NS6)return window.pageYOffset;
if(IE4)return document.body.scrollTop;
}

function getid(name){
if(NS4)return document.layers[name];
if(IE4)return document.all[name];
if(NS6)return document.getElementById(name);
}

function moveidto(num,x,y){
if(NS4)IDs[num].moveTo(x,y);
if(IE4 || NS6){
IDs[num].style.left=x+'px';
IDs[num].style.top=y+'px';
}}

function getidleft(num){
if(NS4)return IDs[num].left;
if(IE4 || NS6)return parseInt(IDs[num].style.left);
}

function getidtop(num){
if(NS4)return IDs[num].top;
if(IE4 || NS6)return parseInt(IDs[num].style.top);
}

function moveidby(num,dx,dy){
if(NS4)IDs[num].moveBy(dx, dy);
if(IE4 || NS6){
IDs[num].style.left=(getidleft(num)+dx)+'px';
IDs[num].style.top=(getidtop(num)+dy)+'px';
}}

function getwindowwidth(){
if(NS4 || NS6)return window.innerWidth;
if(IE4)return document.body.clientWidth;
}

function getwindowheight(){
if(NS4 || NS6)return window.innerHeight;
if(IE4)return document.body.clientHeight;
}

function init(){
wind_w=getwindowwidth();
wind_h=getwindowheight();
for(i=0; i<floatimages.length; i++){
IDs[i]=getid('pic'+i);
if(NS4){
IDs[i].W=IDs[i].document.images["p"+i].width;
IDs[i].H=IDs[i].document.images["p"+i].height;
}
if(NS6 || IE4){
IDs[i].W=document.images["p"+i].width;
IDs[i].H=document.images["p"+i].height;
}
getnewprops(i);
moveidto(i , Math.floor(Math.random()*(wind_w-IDs[i].W)), Math.floor(Math.random()*(wind_h-IDs[i].H)));
if(NS4)IDs[i].visibility = "show";
if(IE4 || NS6)IDs[i].style.visibility = "visible";
startfly=setInterval('moveimage('+i+')',Math.floor(Math.random()*100)+100);
}}

function hidebutterfly(){
for(i=0; i<floatimages.length; i++){
if (IE4)
eval("document.all.pic"+i+".style.visibility='hidden'")
else if (NS6)
document.getElementById("pic"+i).style.visibility='hidden'
else if (NS4)
eval("document.pic"+i+".visibility='hide'")
clearInterval(startfly)
}
}

if (NS4||NS6||IE4){
window.onload=init;
window.onresize=function(){ wind_w=getwindowwidth(); wind_h=getwindowheight(); }
}







// IE5.5+ PNG Alpha Fix v2.0beta1: Background Tiling Support
// (c) 2008 Angus Turnbull http://www.twinhelix.com

// This is licensed under the GNU LGPL, version 2.1 or later.
// For details, see: http://creativecommons.org/licenses/LGPL/2.1/

if (!window.IEPNGFix) {
	window.IEPNGFix = {};
}

IEPNGFix.tileBG = function(elm, pngSrc, ready) {
	// Params: A reference to a DOM element, the PNG src file pathname, and a
	// hidden "ready-to-run" passed when called back after image preloading.

	var data = this.data[elm.uniqueID],
		elmW = Math.max(elm.clientWidth, elm.scrollWidth),
		elmH = Math.max(elm.clientHeight, elm.scrollHeight),
		bgX = elm.currentStyle.backgroundPositionX,
		bgY = elm.currentStyle.backgroundPositionY,
		bgR = elm.currentStyle.backgroundRepeat;

	// Cache of DIVs created per element, and image preloader/data.
	if (!data.tiles) {
		data.tiles = {
			src: '',
			cache: [],
			img: new Image(),
			old: {}
		};
	}
	var tiles = data.tiles,
		pngW = tiles.img.width,
		pngH = tiles.img.height;

	if (pngSrc) {
		if (!ready && pngSrc != tiles.src) {
			// New image? Preload it with a callback to detect dimensions.
			tiles.img.onload = function() {
				this.onload = null;
				IEPNGFix.tileBG(elm, pngSrc, 1);
			};
			return tiles.img.src = pngSrc;
		}
	} else {
		// No image?
		if (tiles.src) ready = 1;
		pngW = pngH = 0;
	}
	tiles.src = pngSrc;

	if (!ready && elmW == tiles.old.w && elmH == tiles.old.h &&
		bgX == tiles.old.x && bgY == tiles.old.y && bgR == tiles.old.r) {
		return;
	}

	// Convert English and percentage positions to pixels.
	var pos = {
			top: '0%',
			left: '0%',
			center: '50%',
			bottom: '100%',
			right: '100%'
		},
		x,
		y,
		pc;
	x = pos[bgX] || bgX;
	y = pos[bgY] || bgY;
	if (pc = x.match(/(\d+)%/)) {
		x = Math.round((elmW - pngW) * (parseInt(pc[1]) / 100));
	}
	if (pc = y.match(/(\d+)%/)) {
		y = Math.round((elmH - pngH) * (parseInt(pc[1]) / 100));
	}
	x = parseInt(x);
	y = parseInt(y);

	// Handle backgroundRepeat.
	var repeatX = { 'repeat': 1, 'repeat-x': 1 }[bgR],
		repeatY = { 'repeat': 1, 'repeat-y': 1 }[bgR];
	if (repeatX) {
		x %= pngW;
		if (x > 0) x -= pngW;
	}
	if (repeatY) {
		y %= pngH;
		if (y > 0) y -= pngH;
	}

	// Go!
	this.hook.enabled = 0;
	if (!({ relative: 1, absolute: 1 }[elm.currentStyle.position])) {
		elm.style.position = 'relative';
	}
	var count = 0,
		xPos,
		maxX = repeatX ? elmW : x + 0.1,
		yPos,
		maxY = repeatY ? elmH : y + 0.1,
		d,
		s,
		isNew;
	if (pngW && pngH) {
		for (xPos = x; xPos < maxX; xPos += pngW) {
			for (yPos = y; yPos < maxY; yPos += pngH) {
				isNew = 0;
				if (!tiles.cache[count]) {
					tiles.cache[count] = document.createElement('div');
					isNew = 1;
				}
				var clipR = (xPos + pngW > elmW ? elmW - xPos : pngW),
					clipB = (yPos + pngH > elmH ? elmH - yPos : pngH);
				d = tiles.cache[count];
				s = d.style;
				s.behavior = 'none';
				s.left = xPos + 'px';
				s.top = yPos + 'px';
				s.width = clipR + 'px';
				s.height = clipB + 'px';
				s.clip = 'rect(' +
					(yPos < 0 ? 0 - yPos : 0) + 'px,' +
					clipR + 'px,' +
					clipB + 'px,' +
					(xPos < 0 ? 0 - xPos : 0) + 'px)';
				s.display = 'block';
				if (isNew) {
					s.position = 'absolute';
					s.zIndex = -999;
					if (elm.firstChild) {
						elm.insertBefore(d, elm.firstChild);
					} else {
						elm.appendChild(d);
					}
				}
				this.fix(d, pngSrc, 0);
				count++;
			}
		}
	}
	while (count < tiles.cache.length) {
		this.fix(tiles.cache[count], '', 0);
		tiles.cache[count++].style.display = 'none';
	}

	this.hook.enabled = 1;

	// Cache so updates are infrequent.
	tiles.old = {
		w: elmW,
		h: elmH,
		x: bgX,
		y: bgY,
		r: bgR
	};
};