var flag=false;//°´±ÈÀýËõСͼƬ
function DrawImage(ImgD,iwidth,iheight){
 var image=new Image();
 image.src=ImgD.src;
 if(image.width>0 && image.height>0){
 flag=true;
 if(image.width/image.height>= iwidth/iheight){
  if(image.width>iwidth){  
  ImgD.width=iwidth;
  ImgD.height=(image.height*iwidth)/image.width;
  }else{
  ImgD.width=image.width;  
  ImgD.height=image.height;
  }
  ImgD.alt=image.width+"¡Á"+image.height;
  }
 else{
  if(image.height>iheight){  
  ImgD.height=iheight;
  ImgD.width=(image.width*iheight)/image.height;  
  }else{
  ImgD.width=image.width;  
  ImgD.height=image.height;
  }
  ImgD.alt=image.width+"¡Á"+image.height;
  }
 }
} 


function click() {
return false; }
function click1() {
if (event.button==2) {return false; }}
function CtrlKeyDown(){
if (event.ctrlKey) {return false; }}
document.onkeydown=CtrlKeyDown;
document.onselectstart=click;
document.onmousedown=click1;



if (window.Event) 
  document.captureEvents(Event.MOUSEUP); 

function nocontextmenu() 
{
event.cancelBubble = true
event.returnValue = false;

return false;
}

function norightclick(e) 
{
if (window.Event) 
{
  if (e.which == 2 || e.which == 3)
   return false;
}
else
  if (event.button == 2 || event.button == 3)
  {
   event.cancelBubble = true
   event.returnValue = false;
   return false;
  }

}

document.oncontextmenu = nocontextmenu;  // for IE5+
document.onmousedown = norightclick;  // for all others