self.onError=null;
currentX = currentY = 0;  
whichIt = null;           
lastScrollX = 0; lastScrollY = 1;
NS = (document.layers) ? 1 : 0;
IE = (document.all) ? 1: 0;

function heartBeat() {
    if(IE) { diffY = document.body.scrollTop; diffX = document.body.scrollLeft; }
    if(NS) { diffY = self.pageYOffset; diffX = self.pageXOffset; }
    //scroll na vertical retirado 
    if(diffY != lastScrollY) {
                //percent = .1 * (diffY - lastScrollY);
                //if(percent > 0) percent = Math.ceil(percent);
                //else percent = Math.floor(percent);
                //               if(IE) document.all.floater.style.pixelTop += percent;
                //               if(NS) document.floater.top += percent; 
                //lastScrollY = lastScrollY + percent;
    }
    //scroll na horizontal retirado
    if(diffX != lastScrollX) {
                //percent = .1 * (diffX - lastScrollX);
                //if(percent > 0) percent = Math.ceil(percent);
                //else percent = Math.floor(percent);
                //if(IE) document.all.floater.style.pixelLeft += percent;
                //if(NS) document.floater.left += percent;
                //lastScrollX = lastScrollX + percent;
    }       
}

function grabIt(e) {
        if(IE) {
				
                whichIt = event.srcElement;
                while (whichIt.id.indexOf("floater") == -1) {
                        whichIt = whichIt.parentElement;
                        if (whichIt == null) { return true; }
            }
                whichIt.style.pixelLeft = whichIt.offsetLeft;
				whichIt.style.pixelTop = whichIt.offsetTop;
                currentX = (event.clientX + document.body.scrollLeft);
                currentY = (event.clientY + document.body.scrollTop);   
        } else { 
        window.captureEvents(Event.MOUSEMOVE);
        if(checkFocus (e.pageX,e.pageY)) { 
                whichIt = document.floater;
                StalkerTouchedX = e.pageX-document.floater.pageX;
                StalkerTouchedY = e.pageY-document.floater.pageY;
        } 
        }
    return true;
}
        
function dropIt() {
        whichIt = null;
			if(NS) window.releaseEvents (Event.MOUSEMOVE);
			return true;
}

if(NS) {
        window.captureEvents(Event.MOUSEUP|Event.MOUSEDOWN);
        window.onmousedown = grabIt;
        window.onmouseup = dropIt;
}
if(IE) {
        document.onmousedown = grabIt;
        document.onmouseup = dropIt;
}

if(NS || IE) action = window.setInterval("heartBeat()",1);