function xCoord(id) {
   object=document.getElementById(id);
   xc=parseInt(object.style.left);
   return xc;
}

function yCoord(id) {
   object=document.getElementById(id);
   yc=parseInt(object.style.top);
   return yc;
}

function placeIt(id, x, y) {
   object=document.getElementById(id);
   object.style.left=x+"px";
   object.style.top=y+"px";
}

function shiftIt(id, dx, dy) {
   object=document.getElementById(id);
   object.style.left=xCoord(id)+dx+"px";
   object.style.top=yCoord(id)+dy+"px";
}