var mousex = 0
var mousey = 0
if(isNC4) document.captureEvents(Event.MOUSEMOVE)
if(isMSIE){
  document.onmousemove=function(){
    mousex=event.clientX+document.body.scrollLeft + document.documentElement.scrollLeft
    mousey=event.clientY+document.body.scrollTop + document.documentElement.scrollTop
    return true
  }
}else if(isOpera){
  document.onmousemove=function(){
    mousex=event.clientX
    mousey=event.clientY
    return true
  }
}else if(isNC){
  document.onmousemove=function(e){
    mousex = e.pageX
    mousey = e.pageY
    return true
  }  
}