function DrawImage(MyPic,W,H){
  var flag=false;
  var image=new Image();
  image.src=MyPic.src;
  if(image.width>0 && image.height>0){
    flag=true;
    if(image.width/image.height>= W/H){
      if(image.width>W){  
        MyPic.width=W;
        MyPic.height=(image.height*W)/image.width;
      }
	  else{
        MyPic.width=image.width;  
        MyPic.height=image.height;
      }
    }
    else{
      if(image.height>H){  
        MyPic.height=H;
        MyPic.width=(image.width*H)/image.height;     
      }
	  else{
        MyPic.width=image.width;  
        MyPic.height=image.height;
      }
    }
  }
} 
/*function DrawImage(MyPic,W,H)
{
  if (MyPic.width>W)
  {
      rat=MyPic.width/W;
      MyPic.height=MyPic.height/rat;
      MyPic.width=W;
  }
  if (MyPic.height>H)
  {
    rat=MyPic.height/H;
    MyPic.width=MyPic.width/rat;
    MyPic.height=H;
  }
  MyPic.width=MyPic.width;
  MyPic.height=MyPic.height;
}*/