見本


クリーム色の部分の記述をコピーして、メモ帳に名前を付けて　hoshi4.js　保存します。
保存場所は、パソコンの「マイ ドキュメント」に保存して下さい。

/*** Beginning of JavaScript ------ Kurt Grigg ------ http://www.btinternet.com/~kurt.grigg/javascript/ ----- ***/

if (document.all){
        xL=5; 
        xH=0;
        xW=0;
        xR=0;
        xE=0;
        xMY=0;
        xMX=0;
        xWd=0;
        xHd=0;
        xF=new Array();
        xY=new Array();
        xX=new Array();
        xS=new Array();
        xA=new Array();
        xB=new Array();
        ini=new Array();
        cl=new Array('#fff000','#0000FF','#ff0000','#00ff00','#ff00ff','#ffa500');
        document.write('<div id="xouter" style="position:absolute;top:0px;left:0px"><div style="position:relative">');
        for (i=0; i < xL; i++){
                document.write('<div id="xie" style="position:absolute;top:0;left:0;width:10px;height:10px;'
                +'font-family:Courier New;font-size:50px;color:#ffffff">*<\/div>');
        }
        document.write('<\/div><\/div>');

        //Initial Placement!
        function Set(){
                for (i=0; i < xL; i++){
                        xH=window.document.body.offsetHeight;
                        xW=window.document.body.offsetWidth;
                        xA[i]=Math.round(Math.random()*xH);
                        xB[i]=Math.round(Math.random()*xW);
                        xS[i]=Math.random()*0.07+0.05;
                        xR=Math.round(Math.random()*3);
                        xE=Math.round(Math.random()*2500+50);
                        if (xR == 3) xB[i]=-xE;
                        if (xR == 2) xB[i]=xW+xE;
                        if (xR == 1) xA[i]=-xE;
                        if (xR == 0) xA[i]=xH;
                        xF[i]=xW/14;
                }
        }
        Set();

        function Assign(){
                xouter.style.top=document.body.scrollTop;
                for (i=0; i < xL; i++){
                        xF[i]-=xS[i]*25;
                        if (xF[i] < 4) xF[i]=3;
                        xie[i].style.top =xY[i];
                        xie[i].style.left=xX[i];
                        xie[i].style.fontSize=xF[i];
                        xie[i].style.filter='glow(color='+ini[i]+', strength='+xF[i]/3+')';
                }
        }

        function fly(){
                var N=Math.floor(Math.random()*cl.length);
                xMY=window.document.body.clientHeight/2;
                xMX=window.document.body.clientWidth/2;
                xWd=Math.round(Math.random()*40+5);
                xHd=Math.round(Math.random()*30+5);
                for (i=0; i < xL; i++){
                        xY[i]=xA[i]+=(xMY-xA[i])*(xS[i]);              
                        xX[i]=xB[i]+=(xMX-xB[i])*(xS[i]);  
                        if ((xX[i] > xMX-xWd) && (xX[i] < xMX+xWd) && (xY[i] > xMY-xHd) && (xY[i] < xMY+xHd)){
                                xH=window.document.body.offsetHeight;
                                xW=window.document.body.offsetWidth;
                                xA[i]=Math.round(Math.random()*xH);
                                xB[i]=Math.round(Math.random()*xW);
                                xS[i]=Math.random()*0.05+0.05;
                                xR=Math.round(Math.random()*3);
                                xE=Math.round(Math.random()*50+50);
                                if (xR == 3) xB[i]=-xE;
                                if (xR == 2) xB[i]=xW+xE;
                                if (xR == 1) xA[i]=-xE;
                                if (xR == 0) xA[i]=xH+xE;
                        }
                        if ((xX[i] < 0) || (xX[i] > xW) || (xY[i] < 0) || (xY[i] > xH)) {
                                xF[i]=xW/14;
                                ini[i]=cl[N];
                        }
                }
                Assign();
                setTimeout('fly()',10);
        }
        fly();
}

/*** ----- End of JavaScript ----- ***/



JS File