function resizeimg(ImgD,iwidth,iheight) 
{ 
 var image=new Image(); 
 image.src=ImgD.src; 
 if(image.width>0&&image.height>0)
 { 
  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; 
    } 
   } 
   else
   { 
    if(image.height>iheight)
	{ 
     ImgD.height=iheight; 
     ImgD.width=(image.width*iheight)/image.height; 
    }
	else
	{ 
     ImgD.width=image.width; 
     ImgD.height=image.height; 
     } 
    } 
  
  } 
}