Efecto fuegos artificiales en tu Web

por **Alex@nder** Dom Nov 16, 2008 11:15 pm

Código:: <script language="Javascript1.2"> var ns=document.layers?1:0 var ie4=document.all?1:0 var ns6=document.getElementById&&!document.all?1:0 amount=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>