How to install a fireworks effect on the blog.
1. Go to Blogger > layout> HTML/Javascript
2. Copy and paste the code below
<script type="text/javascript">change the colours at the start of the script you just copied to be the colour of fireworks you require.
function light_blue_touchpaper(){if(document.getElementById){var e;boddie=document.createElement("div");boddie.style.position="fixed";boddie.style.top="0px";boddie.style.left="0px";boddie.style.overflow="visible";boddie.style.width="1px";boddie.style.height="1px";boddie.style.backgroundColor="transparent";document.body.appendChild(boddie);set_width();for(e=0;e<bangs;e++){write_fire(e);launch(e);setInterval("stepthrough("+e+")",speed)}}}function write_fire(e){var t,n,r;stars[e+"r"]=createDiv("|",12);boddie.appendChild(stars[e+"r"]);for(t=bits*e;t<bits+bits*e;t++){stars[t]=createDiv("*",13);boddie.appendChild(stars[t])}}function createDiv(e,t){var n=document.createElement("div");n.style.font=t+"px monospace";n.style.position="absolute";n.style.backgroundColor="transparent";n.appendChild(document.createTextNode(e));return n}function launch(e){colour[e]=Math.floor(Math.random()*colours.length);Xpos[e+"r"]=swide*.5;Ypos[e+"r"]=shigh-5;bangheight[e]=Math.round((.5+Math.random())*shigh*.4);dX[e+"r"]=(Math.random()-.5)*swide/bangheight[e];if(dX[e+"r"]>1.25)stars[e+"r"].firstChild.nodeValue="/";else if(dX[e+"r"]<-1.25)stars[e+"r"].firstChild.nodeValue="\\";else stars[e+"r"].firstChild.nodeValue="|";stars[e+"r"].style.color=colours[colour[e]]}function bang(e){var t,n,r=0;for(t=bits*e;t<bits+bits*e;t++){n=stars[t].style;n.left=Xpos[t]+"px";n.top=Ypos[t]+"px";if(decay[t])decay[t]--;else r++;if(decay[t]==15)n.fontSize="7px";else if(decay[t]==7)n.fontSize="2px";else if(decay[t]==1)n.visibility="hidden";if(decay[t]>1&&Math.random()<.1){n.visibility="hidden";setTimeout("stars["+t+'].style.visibility="visible"',speed-1)}Xpos[t]+=dX[t];Ypos[t]+=dY[t]+=1.25/intensity[e]}if(r!=bits)setTimeout("bang("+e+")",speed)}function stepthrough(e){var t,n,r;var i=Xpos[e+"r"];var s=Ypos[e+"r"];Xpos[e+"r"]+=dX[e+"r"];Ypos[e+"r"]-=4;if(Ypos[e+"r"]<bangheight[e]){n=Math.floor(Math.random()*3*colours.length);intensity[e]=5+Math.random()*4;for(t=e*bits;t<bits+bits*e;t++){Xpos[t]=Xpos[e+"r"];Ypos[t]=Ypos[e+"r"];dY[t]=(Math.random()-.5)*intensity[e];dX[t]=(Math.random()-.5)*(intensity[e]-Math.abs(dY[t]))*1.25;decay[t]=16+Math.floor(Math.random()*16);r=stars[t];if(n<colours.length)r.style.color=colours[t%2?colour[e]:n];else if(n<2*colours.length)r.style.color=colours[colour[e]];else r.style.color=colours[t%colours.length];r.style.fontSize="13px";r.style.visibility="visible"}bang(e);launch(e)}stars[e+"r"].style.left=i+"px";stars[e+"r"].style.top=s+"px"}function set_width(){var e=999999;var t=999999;if(document.documentElement&&document.documentElement.clientWidth){if(document.documentElement.clientWidth>0)e=document.documentElement.clientWidth;if(document.documentElement.clientHeight>0)t=document.documentElement.clientHeight}if(typeof self.innerWidth!="undefined"&&self.innerWidth){if(self.innerWidth>0&&self.innerWidth<e)e=self.innerWidth;if(self.innerHeight>0&&self.innerHeight<t)t=self.innerHeight}if(document.body.clientWidth){if(document.body.clientWidth>0&&document.body.clientWidth<e)e=document.body.clientWidth;if(document.body.clientHeight>0&&document.body.clientHeight<t)t=document.body.clientHeight}if(e==999999||t==999999){e=800;t=600}swide=e;shigh=t}var bits=80;var speed=33;var bangs=5;var colours=new Array("#03f","#f03","#0e0","#93f","#0cf","#f93","#f0c");var bangheight=new Array;var intensity=new Array;var colour=new Array;var Xpos=new Array;var Ypos=new Array;var dX=new Array;var dY=new Array;var stars=new Array;var decay=new Array;var swide=800;var shigh=600;var boddie;if(typeof "addRVLoadEvent"!="function")function addRVLoadEvent(e){var t=window.onload;if(typeof t!="function")window.onload=e;else window.onload=function(){if(t)t();e()}}addRVLoadEvent(light_blue_touchpaper);window.onresize=set_width
</script>
The fireworks should begin to explode on the screen, just like it is on this page.