Codigo

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<script language="JavaScript1.2"> var ns=document.layers?1:0 var ie4=document.all?1:0 var ns6=document.getElementById&&!document.all?1:0amount=14; if (ns){ for (i=0; i < amount; i++) document.write("<LAYER NAME='nsstars"+i+"' LEFT=0 TOP=0 BGCOLOR='#000000' CLIP='0,0,1,1'></LAYER>"); } else if (ie4||ns6){ document.write("<div id='ieCov' style='position:absolute;top:0px;left:0px'>"); document.write("<div style='position:relative'>"); for (i=0; i < amount; i++) document.write("<div id='iestars"+i+"' style='position:absolute;top:0px;left:0px;width:1;height:1;background:#ffffff;font-size:1;z-index:10'></div>"); document.write("</div></div>"); } Clrs=new Array('ff0000','00ff00','ffffff','ff00ff','ffa500','ffff00','00ff00','ffffff','ff00ff') sClrs=new Array('ffa500','00ff00','FFAAFF','fff000','fffffF') Xpos=300; Ypos=150; initialStarColor='00ff00'; step=5; currStep=0; explosionSize=120; function Fireworks(){ var WinHeight=(ns||ns6)?window.innerHeight-100:window.document.body.clientHeight-100; var WinWidth=(ns||ns6)?window.innerWidth-100:window.document.body.clientWidth-100; var Yscroll=(ns||ns6)?window.pageYOffset:document.body.scrollTop; for (i=0; i < amount; i++){ if (ie4||ns6) var layer=ns6?document.getElementById("iestars"+i).style : eval("iestars"+i).style; else if (ns) var layer=document.layers["nsstars"+i] var randCol=Math.round(Math.random()*8); var randSz=Math.round(Math.random()*2); layer.top = Ypos + explosionSize*Math.sin((currStep+i*5)/3)*Math.sin(currStep/100) layer.left= Xpos + explosionSize*Math.cos((currStep+i*5)/3)*Math.sin(currStep/100) if (currStep < 110){ if (ns){layer.bgColor=initialStarColor;layer.clip.width=1;layer.clip.height=1} else{layer.background=initialStarColor;layer.width=1;layer.height=1;layer.fontSize=1} } else{ if (ns){layer.bgColor=Clrs[randCol];layer.clip.width=randSz;layer.clip.height=randSz} else{layer.background=Clrs[randCol];layer.width=randSz;layer.height=randSz;layer.fontSize=randSz} } } if (currStep > 220) { currStep=0; Ypos = 50+Math.round(Math.random()*WinHeight)+Yscroll; Xpos = 50+Math.round(Math.random()*WinWidth); for (i=0; i < sClrs.length; i++) { var newIcol=Math.round(Math.random()*i); } initialStarColor=sClrs[newIcol]; explosionSize=Math.round(80*Math.random()+100); } currStep+=step; setTimeout("Fireworks()",20); } Fireworks(); // --> </script>

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Codigo

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<script type="text/javascript"> // <![CDATA[ var bits=100; // how many bits var intensity=7; // how 'powerful' is the explosion (from 3 to 10 is best) var speed=20; // how fast - smaller is faster var colours=new Array("#03f", "#f03", "#0e0", "#93f", "#0cc", "#f93"); // blue red green purple cyan orange var dx, xpos, ypos, bangheight; var Xpos=new Array(); var Ypos=new Array(); var dX=new Array(); var dY=new Array(); var decay=new Array(); var colour=0; var swide=800; var shigh=600; function write_fire() { var b, s; b=document.createElement("div"); s=b.style; s.position="absolute"; b.setAttribute("id", "bod"); document.body.appendChild(b); set_scroll(); set_width(); b.appendChild(div("lg", 3, 4)); b.appendChild(div("tg", 2, 3)); for (var i=0; i<bits; i++) b.appendChild(div("bg"+i, 1, 1)); } function div(id, w, h) { var d=document.createElement("div"); d.style.position="absolute"; d.style.overflow="hidden"; d.style.width=w+"px"; d.style.height=h+"px"; d.setAttribute("id", id); return (d); } function bang() { var i, X, Y, Z, A=0; for (i=0; i<bits; i++) { X=Math.round(Xpos[i]); Y=Math.round(Ypos[i]); Z=document.getElementById("bg"+i).style; if((X>=0)&&(X<swide)&&(Y>=0)&&(Y<shigh)) { Z.left=X+"px"; Z.top=Y+"px"; } if ((decay[i]-=1)>14) { Z.width="3px"; Z.height="3px"; } else if (decay[i]>7) { Z.width="2px"; Z.height="2px"; } else if (decay[i]>3) { Z.width="1px"; Z.height="1px"; } else if (++A) Z.visibility="hidden"; Xpos[i]+=dX[i]; Ypos[i]+=(dY[i]+=1.25/intensity); } if (A!=bits) setTimeout("bang()", speed); } function stepthrough() { var i, Z; var oldx=xpos; var oldy=ypos; xpos+=dx; ypos-=4; if (ypos<bangheight||xpos<0||xpos>=swide||ypos>=shigh) { for (i=0; i<bits; i++) { Xpos[i]=xpos; Ypos[i]=ypos; dY[i]=(Math.random()-0.5)*intensity; dX[i]=(Math.random()-0.5)*(intensity-Math.abs(dY[i]))*1.25; decay[i]=Math.floor((Math.random()*16)+16); Z=document.getElementById("bg"+i).style; Z.backgroundColor=colours[colour]; Z.visibility="visible"; } bang(); launch(); } document.getElementById("lg").style.left=xpos+"px"; document.getElementById("lg").style.top=ypos+"px"; document.getElementById("tg").style.left=oldx+"px"; document.getElementById("tg").style.top=oldy+"px"; } function launch() { colour=Math.floor(Math.random()*colours.length); xpos=Math.round((0.5+Math.random())*swide*0.5); ypos=shigh-5; dx=(Math.random()-0.5)*4; bangheight=Math.round((0.5+Math.random())*shigh*0.4); document.getElementById("lg").style.backgroundColor=colours[colour]; document.getElementById("tg").style.backgroundColor=colours[colour]; } window.onscroll=set_scroll; function set_scroll() { var sleft, sdown; if (typeof(self.pageYOffset)=="number") { sdown=self.pageYOffset; sleft=self.pageXOffset; } else if (document.body.scrollTop || document.body.scrollLeft) { sdown=document.body.scrollTop; sleft=document.body.scrollLeft; } else if (document.documentElement && (document.documentElement.scrollTop || document.documentElement.scrollLeft)) { sleft=document.documentElement.scrollLeft; sdown=document.documentElement.scrollTop; } else { sdown=0; sleft=0; } var s=document.getElementById("bod").style; s.top=sdown+"px"; s.left=sleft+"px"; } window.onresize=set_width; function set_width() { if (typeof(self.innerWidth)=="number") { swide=self.innerWidth; shigh=self.innerHeight; } else if (document.documentElement && document.documentElement.clientWidth) { swide=document.documentElement.clientWidth; shigh=document.documentElement.clientHeight; } else if (document.body.clientWidth) { swide=document.body.clientWidth; shigh=document.body.clientHeight; } } window.onload=function() { if (document.getElementById) { set_width(); write_fire(); launch(); setInterval('stepthrough()', speed); }} // ]]> </script>

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