<script type='text/javascript'>

//<![CDATA[

/***********************************************

* Pipistrelli volanti nel blog

* Script originale di Virtual_Max

* Adattato da ciudadblogger.com e da www.ideepercomputeredinternet.com

***********************************************/

var vmin=2;

var vmax=5;

var vr=2;

var timer1;

function iecompattest(){

return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body

}

function Chip(chipname,width,height){

this.named=chipname;

this.vx=vmin+vmax*Math.random();

this.vy=vmin+vmax*Math.random();

this.w=width+20;

this.h=height;

this.xx=0;

this.yy=0;

this.timer1=null;

}

function movechip(chipname){

if (document.getElementById){

eval("chip="+chipname);

if (window.innerWidth || window.opera){

pageX=window.pageXOffset;

pageW=window.innerWidth-40;

pageY=window.pageYOffset;

pageH=window.innerHeight-20;

}

else if (document.body){

pageX=iecompattest().scrollLeft;

pageW=iecompattest().offsetWidth-40;

pageY=iecompattest().scrollTop;

pageH=iecompattest().offsetHeight-20;

}

chip.xx=chip.xx+chip.vx;

chip.yy=chip.yy+chip.vy;

chip.vx+=vr*(Math.random()-0.5);

chip.vy+=vr*(Math.random()-0.5);

if(chip.vx>(vmax+vmin)) chip.vx=(vmax+vmin)*2-chip.vx;

if(chip.vx<(-vmax-vmin)) chip.vx=(-vmax-vmin)*2-chip.vx;

if(chip.vy>(vmax+vmin)) chip.vy=(vmax+vmin)*2-chip.vy;

if(chip.vy<(-vmax-vmin)) chip.vy=(-vmax-vmin)*2-chip.vy;

if(chip.xx<=pageX){

chip.xx=pageX;

chip.vx=vmin+vmax*Math.random();

}

if(chip.xx>=pageX+pageW-chip.w){

chip.xx=pageX+pageW-chip.w;

chip.vx=-vmin-vmax*Math.random();

}

if(chip.yy<=pageY)

{chip.yy=pageY;

chip.vy=vmin+vmax*Math.random();

}

if(chip.yy>=pageY+pageH-chip.h)

{chip.yy=pageY+pageH-chip.h;

chip.vy=-vmin-vmax*Math.random();

}

document.getElementById(chip.named).style.left=chip.xx+"px";

document.getElementById(chip.named).style.top=chip.yy+"px";

chip.timer1=setTimeout("movechip('"+chip.named+"')",100);

}

}

function pagestart(){

pipistrello1=new Chip("pipistrello1",147,168);

pipistrello2=new Chip("pipistrello2",47,68);

pipistrello3=new Chip("pipistrello3",47,68);

pipistrello4=new Chip("pipistrello4",47,68);

movechip("pipistrello1");

movechip("pipistrello2");

movechip("pipistrello3");

movechip("pipistrello4");

}

if (window.addEventListener)

window.addEventListener("load", pagestart, false)

else if (window.attachEvent)

window.attachEvent("onload", pagestart)

else if (document.getElementById)

window.onload=pagestart

//]]>

</script>