function DrawImage(ImgD,Pic_Width,Pic_Height)
{
var image=new Image(); 
image.src=ImgD.src; 
if(image.width>0 && image.height>0){ flag=true; 
if(image.width/image.height>= Pic_Width/Pic_Height){ 
if(image.width>Pic_Width){ImgD.width=Pic_Width; ImgD.height=(image.height*Pic_Width)/image.width; }
else{ ImgD.width=image.width;ImgD.height=image.height; } 
ImgD.alt="点击查看详细信息..."; 
}else{ if(image.height>Pic_Height){ImgD.height=Pic_Height; ImgD.width=(image.width*Pic_Height)/image.height; }
else{ ImgD.width=image.width;ImgD.height=image.height; } 
ImgD.alt="点击查看详细信息..."; 
}}}