var tempX = 0
var tempY = 0
var _start= 0
var offset_L=0
var offset_X=0
//alert('grag)');	

document.onmousemove = getMouseXY;

function start_() {
//alert(1)
top_=document.getElementById('pop').style.top 
_top=top_.substr(0,(top_.length-2))
offset_X=tempY - _top
left_=document.getElementById('pop').style.left 
left_=left_.substr(0,(left_.length-2))
offset_L=tempX - left_
_start=true
}

function stop_() {
_start=false
}

function getMouseXY() {
    tempX = event.clientX + document.body.scrollLeft
    tempY = event.clientY + document.body.scrollTop
//	   window.status='trascina' + _start
  if (tempX < 0){tempX = 0}
  if (tempY < 0){tempY = 0}  
   //document.Show.MouseX.value = tempX
  //document.Show.MouseY.value = tempY
  if (_start) {
  t=tempX - offset_X
  l=tempY - offset_L
  document.getElementById('pop').style.left=t
  document.getElementById('pop').style.top=l
  //alert(1)
  }
  return true
}