function chgsize(fname) {
    var oImg;
    oImg=fname
	if (oImg.height>530) oImg.height=530;
	if (oImg.width>700) oImg.width=700;
}
//圖片拖動腳本
var dragapproved=false
var eventsource,x,y
function move()
 {
  if (event.button==1&&dragapproved) //改變被<u><b><font color="#FF0000">拖動</font></b></u>元素在頁面上的位置
   {
    eventsource.style.pixelLeft=temp1+event.clientX-x
    eventsource.style.pixelTop=temp2+event.clientY-y
    return false
   }
 }
function drags()
 {
  if (!document.all)
  return
  if (event.srcElement.id=='PhotoViewer') //捕捉鼠標(biāo)和被<u><b><font color="#FF0000">拖動</font></b></u>元素的當(dāng)前位置
   {
    dragapproved=true
    eventsource=event.srcElement
    temp1=eventsource.style.pixelLeft
    temp2=eventsource.style.pixelTop
    x=event.clientX
    y=event.clientY
    document.onmousemove=move
   }
 }
document.onmousedown=drags   
document.onmouseup=new Function("dragapproved=false")
//圖片拖動腳本結(jié)束