function hideDiv(){
	var myObj = document.getElementById("myDiv");
	myObj.style.display = "none";	
}

document.write("<div id='myDiv' style='position:absolute; z-index=5' onmouseover='stopMove();' onmouseout='startMove();'><div><a href='#'; target='_blank'><img src='float/p1.gif' width='218' height='175' border='0'></a></div><div><a href='javascript:hideDiv();'><img src='float/close.gif' border='0'></a></div></div>");

var myObj = document.getElementById("myDiv");
var vmin=2;
var vmax=5;
var vr=5;
var vx=vmin+vmax*Math.random();
var vy=vmin+vmax*Math.random();
var xx=0;
var yy=0;
var width=120;
var height=100;

function moveImg(){
	     var scrollPos; 
		pageX=document.body.scrollLeft;
		pageW=document.body.offsetWidth-120;
		pageY=document.body.scrollTop;
		pageH=document.body.offsetHeight;
		
		if (typeof window.pageYOffset != 'undefined') { 
		scrollPos = window.pageYOffset; 
		} 
		else if (typeof document.compatMode != 'undefined' && 
		document.compatMode != 'BackCompat') { 
		scrollPos = document.documentElement.scrollTop; 
		} 
		else if (typeof document.body != 'undefined') { 
		scrollPos = document.body.scrollTop; 
		} 
        pageY=scrollPos;
		xx+=vx;
		yy+=vy;
		vx+=vr*(Math.random()-0.5);
		vy+=vr*(Math.random()-0.5);
		if(vx>(vmax+vmin))  vx=(vmax+vmin)*2-vx;
		if(vx<(-vmax-vmin)) vx=(-vmax-vmin)*2-vx;
		if(vy>(vmax+vmin))  vy=(vmax+vmin)*2-vy;
		if(vy<(-vmax-vmin)) vy=(-vmax-vmin)*2-vy;
		if(xx<=0){
			vx=vmin+vmax*Math.random();
		}
		if(xx>=pageX+pageW-width){
			vx=-vmin-vmax*Math.random();
		}
		if(yy<=pageY){
			vy=vmin+vmax*Math.random();
		}
		if(yy>=pageH-pageY-height){
			vy=-vmin-vmax*Math.random();
		}
	    
	myObj.style.left = xx+"px";
	myObj.style.top = yy+"px";
}
function startMove(){
	times=setInterval("moveImg()",50) ;
}
function stopMove(){
	clearInterval(times);
}
startMove();