//Thumbnail image viewer- 
//© Dynamic Drive (www.dynamicdrive.com)
//For full source code, usage terms, and 100's more DHTML scripts, visit http://www.dynamicdrive.com

//drag drop function for NS 4

var nsx,nsy,nstemp

function drag_dropns(name){
  temp=eval(name)
  temp.captureEvents(Event.MOUSEDOWN | Event.MOUSEUP)
  temp.onmousedown=gons
  temp.onmousemove=dragns
  temp.onmouseup=stopns
}

function gons(e){
  temp.captureEvents(Event.MOUSEMOVE)
  nsx=e.x
  nsy=e.y
}

function dragns(e){
  temp.moveBy(e.x-nsx,e.y-nsy)
  return false
}

function stopns(){
  temp.releaseEvents(Event.MOUSEMOVE)
}

//drag drop function for IE 4+ and NS6

function drag_drop(e){
  if (ie&&dragapproved){
    crossobj.style.left=tempx+event.clientX-offsetx
    crossobj.style.top=tempy+event.clientY-offsety
  }
  else if (ns6&&dragapproved){
    crossobj.style.left=tempx+e.clientX-offsetx
    crossobj.style.top=tempy+e.clientY-offsety
  }
  return false
}

function initializedrag(e){
  if (ie&&event.srcElement.id=="drag"||ns6&&e.target.id=="drag"){
    offsetx=ie? event.clientX : e.clientX
    offsety=ie? event.clientY : e.clientY

    tempx=parseInt(crossobj.style.left)
    tempy=parseInt(crossobj.style.top)

    dragapproved=true
    document.onmousemove=drag_drop
  }
}

document.onmousedown=initializedrag
document.onmouseup=new Function("dragapproved=false")