var isNS = (navigator.appName == 'Netscape');
var STEPSIZE = 60;

function processMouseIE() {

if(event.clientX>(tmpX+STEPSIZE) || event.clientX<(tmpX-STEPSIZE) || event.clientY>(tmpY+STEPSIZE) || event.clientY<(tmpY-STEPSIZE))
{
document.all.left.style.visibility='visible';
document.all.right.style.visibility='visible';

//swap foot to move
if(current=='right')
current='left';
else current='right';

tmpX=event.clientX;
tmpY=event.clientY;

if(current=='left')//left is topmost
{
document.all.right.style.pixelLeft = event.clientX + document.body.scrollLeft - 0;
document.all.right.style.pixelTop = event.clientY + document.body.scrollTop + 5 ;
}

if (current=='right')//right is topmost
{
document.all.left.style.pixelLeft = event.clientX + document.body.scrollLeft - 0;
document.all.left.style.pixelTop = event.clientY + document.body.scrollTop + 5 ;
}
}

}


function processMouseNS(e) {

if(e.pageX>(tmpX+STEPSIZE) || e.pageX<(tmpX-STEPSIZE) || e.pageY>(tmpY+STEPSIZE) || e.pageY<(tmpY-STEPSIZE))
{
document.left.visibility='show';
document.right.visibility='show';

//swap foot to move
if(current=='right')
current='left';
else current='right';

tmpX=e.pageX;
tmpY=e.pageY;

if(current=='left')//left is topmost
{
document.right.left = e.pageX;
document.right.top = e.pageY;
}

if (current=='right')//right is topmost
{
document.left.left = e.pageX;
document.left.top = e.pageY;
}
}

}

function hidef()
{
if(isNS){
document.left.visibility='hide';
document.right.visibility='hide';
}
else{
document.all.left.style.visibility='hidden';
document.all.right.style.visibility='hidden';
}
}

function init() {
current='right';
setInterval('hidef();',2000);//turn feet off after 2 secs


if(isNS){
tmpX=100; //arbitory start positions
tmpY=150;

document.right.left = tmpX;
document.right.top = tmpY;
document.left.left = tmpX;
document.left.top = tmpY+STEPSIZE;

document.captureEvents(Event.MOUSEMOVE);
document.onmousemove = processMouseNS;
}
else{
tmpX=event.clientX;
tmpY=event.clientY;

document.all.right.style.pixelLeft = event.clientX + document.body.scrollLeft - 0;
document.all.right.style.pixelTop = event.clientY + document.body.scrollTop + 5 ;
document.all.left.style.pixelLeft = event.clientX + document.body.scrollLeft - 0;
document.all.left.style.pixelTop = event.clientY + document.body.scrollTop + STEPSIZE;

document.onmousemove = processMouseIE;
}
}