Sample: (fireworks background)
<script language="JavaScript"> <!-- IE4+, NS4+, NS6 Fireworks script! Check www.velpzuid.nl CL=new Array('#ff0000','#00ff00','#ffffff','#ff00ff','#ffa500','#ffff00','#00ff00','#ffffff','#ff00ff') CL2=new Array('#ffa500','#00ff00','#FFAAFF','#fff000','#fffffF') Velp=130; Zuid=130; I='#00ff00'; C=0; S=5; H=null; W=null; Y=null; NS4=(document.layers); NS6=(document.getElementById&&!document.all); IE4=(document.all); A=14; E=120; L=null; if (NS4){ for (i=0; i < A; i++) document.write('<LAYER NAME="nsstars'+i+'" TOP=0 LEFT=0 BGCOLOR='+I+' CLIP="0,0,2,2"></LAYER>'); } if (NS6){ window.document.body.style.overflow='hidden'; for (i=0; i < A; i++) document.write('<div id="ns6stars'+i+'" style="position:absolute;top:0px;left:0px;height:2px;width:2px;font-size:2px;background:'+I+'"></div>'); } if (IE4){ document.write('<div id="ie" style="position:absolute;top:0px;left:0px"><div style="position:relative">'); for (i=0; i < A; i++) document.write('<div id="iestars" style="position:absolute;top:0;left:0;width:2px;height:2px;background:'+I+';font-size:2px"></div>'); document.write('</div></div>'); } function Fireworks(){ H=(NS4||NS6)?window.innerHeight:window.document.body.clientHeight; W=(NS4||NS6)?window.innerWidth:window.document.body.clientWidth; Y=(NS4||NS6)?window.pageYOffset:window.document.body.scrollTop; for (i=0; i < A; i++){ if (IE4)L=iestars[i].style; if (NS4)L=document.layers["nsstars"+i]; if (NS6)L=document.getElementById("ns6stars"+i).style; var F = CL[Math.floor(Math.random()*CL.length)]; var RS=Math.round(Math.random()*2); L.top = Zuid + E*Math.sin((C+i*5)/3)*Math.sin(C/100) L.left= Velp + E*Math.cos((C+i*5)/3)*Math.sin(C/100) if (C < 110){ if (NS4){L.bgColor=I;L.clip.width=1;L.clip.height=1} if (IE4||document.getElementById) {L.background=I;L.width=1;L.height=1;L.fontSize=1} } else{ if (NS4){L.bgColor=F;L.clip.width=RS;L.clip.height=RS} if (IE4||document.getElementById){L.background=F;L.width=RS;L.height=RS;L.fontSize=RS} } } if (C > 220){ C=0; var NC = CL2[Math.floor(Math.random()*CL2.length)]; I=NC; E=Math.round(100+Math.random()*90); Zuid = E+Math.round(Math.random()*(H-(E*2.2)))+Y; Velp = E+Math.round(Math.random()*(W-(E*2.2))); } C+=S; setTimeout("Fireworks()",50); } Fireworks(); // --> </script> <!-- http://www.velpzuid.nl - Music & Website creators -->
