/***********************************************
* Floating image script- By Virtual_Max (http://www.geocities.com/siliconvalley/lakes/8620)
* Modified by Dynamic Drive for various improvements
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/


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,duration){
 this.named=chipname;
 this.vx=vmin+vmax*Math.random();
 this.vy=vmin+vmax*Math.random();
 this.w=width+20;
 this.h=height;
 this.duration=duration;
 this.runningFor=0;
 this.runFor=100;
 this.xx=0;
 this.yy=0;
 this.timer1=null;
}

function _hide(chip_name)
{
	var element = document.getElementById(chip_name);
	element.style.display = "none";
}

function movechip(chipname)
{
if (document.getElementById)
{
	// var spy = document.getElementById("spy");
   
   eval("chip="+chipname);

	// spy.innerHTML = "<h5 style=\"color:white\">runningFor:" + chip.runningFor + "<br />duration:" + chip.duration + "<br />timer1:" + chip.timer1 + "<br /></h5>";
	
   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();
     }

	var element = document.getElementById(chip.named);
	element.style.left=chip.xx+"px";
	element.style.top=chip.yy+"px";

	if(chip.timer1 == null || (chip.runningFor <= chip.duration))
	{
   		chip.timer1=setTimeout("movechip('"+chip.named+"')",chip.runFor);
   	}
   	else
   	{
   		// pause and hide
   		setTimeout("_hide('"+chip.named+"')", 4000);
   		
   		// just hide without pause
//		element.style.display = "none";
   	}
   		
   	chip.runningFor += chip.runFor;
  }
}