function close_me(obj){
 (document.getElementById(obj)).style.visibility="hidden";
 }
 
 function show_object(obj){
 (document.getElementById(obj)).style.visibility="visible";
 }

function hide_all(){
 for (i=0; i<(my_objects.length); i++){
  close_me(my_objects[i]);
  }
 } 

function hide_some(objs){
 for (i=0; i<(objs.length); i++){
  close_me(objs[i]);
  }
 } 

self.onError=null;

currentX = currentY = 0;  
whichIt = null;           
lastScrollX = 0; lastScrollY = 0;

NS = (document.layers) ? 1 : 0;
IE = (document.all) ? 1: 0;

function heartBeat(obj) {

if(IE) { diffY = document.body.scrollTop; diffX = document.body.scrollLeft; }
if(NS) { diffY = self.pageYOffset; diffX = self.pageXOffset; }
	
if(diffY != lastScrollY) {
        percent = .1 * (diffY - lastScrollY);
        if(percent > 0) percent = Math.ceil(percent);
        else percent = Math.floor(percent);
			if(IE) document.all.obj.style.pixelTop += percent;
			if(NS) document.obj.top += percent; 
        lastScrollY = lastScrollY + percent;
    }
if(diffX != lastScrollX) {
	percent = .1 * (diffX - lastScrollX);
	if(percent > 0) percent = Math.ceil(percent);
	else percent = Math.floor(percent);
	if(IE) document.all.obj.style.pixelLeft += percent;
	if(NS) document.obj.left += percent;
	lastScrollX = lastScrollX + percent;
}}

function checkFocus(x,y,obj) { 
stalkerx = document.obj.pageX;
stalkery = document.obj.pageY;
stalkerwidth = document.obj.clip.width;
stalkerheight = document.obj.clip.height;
if( (x > stalkerx && x < (stalkerx+stalkerwidth)) && (y > stalkery && y < (stalkery+stalkerheight))) return true;
else return false;
}

function grabIt(e) {
if(IE) {
	whichIt = event.srcElement;
	while (whichIt.id.indexOf("obj") == -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.obj;
        StalkerTouchedX = e.pageX-document.obj.pageX;
        StalkerTouchedY = e.pageY-document.obj.pageY;
}}
return true;
}

function moveIt(e) {
if (whichIt == null) { return false; }
if(IE) {
    newX = (event.clientX + document.body.scrollLeft);
    newY = (event.clientY + document.body.scrollTop);
    distanceX = (newX - currentX);    distanceY = (newY - currentY);
    currentX = newX;    currentY = newY;
    whichIt.style.pixelLeft += distanceX;
    whichIt.style.pixelTop += distanceY;
	if(whichIt.style.pixelTop < document.body.scrollTop) whichIt.style.pixelTop = document.body.scrollTop;
	if(whichIt.style.pixelLeft < document.body.scrollLeft) whichIt.style.pixelLeft = document.body.scrollLeft;
	if(whichIt.style.pixelLeft > document.body.offsetWidth - document.body.scrollLeft - whichIt.style.pixelWidth - 20) whichIt.style.pixelLeft = document.body.offsetWidth - whichIt.style.pixelWidth - 20;
	if(whichIt.style.pixelTop > document.body.offsetHeight + document.body.scrollTop - whichIt.style.pixelHeight - 5) whichIt.style.pixelTop = document.body.offsetHeight + document.body.scrollTop - whichIt.style.pixelHeight - 5;
	event.returnValue = false;
} else { 
	whichIt.moveTo(e.pageX-StalkerTouchedX,e.pageY-StalkerTouchedY);
if(whichIt.left < 0+self.pageXOffset) whichIt.left = 0+self.pageXOffset;
if(whichIt.top < 0+self.pageYOffset) whichIt.top = 0+self.pageYOffset;
if( (whichIt.left + whichIt.clip.width) >= (window.innerWidth+self.pageXOffset-17)) whichIt.left = ((window.innerWidth+self.pageXOffset)-whichIt.clip.width)-17;
if( (whichIt.top + whichIt.clip.height) >= (window.innerHeight+self.pageYOffset-17)) whichIt.top = ((window.innerHeight+self.pageYOffset)-whichIt.clip.height)-17;
return false;
}
return false;
}

function dropIt() {
whichIt = null;
if(NS) window.releaseEvents (Event.MOUSEMOVE);
return true;
}

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

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