<script language="JavaScript" type="text/javascript">

 <!--

            function DrawImage(ImgD, FitWidth, FitHeight) {

                var image = new Image();

                image.src = ImgD.src;

                if (image.width > 0 && image.height > 0) {

                    if (image.width / image.height >= FitWidth / FitHeight) {

                        if (image.width > FitWidth) {

                            ImgD.width = FitWidth;

                            ImgD.height = (image.height * FitWidth) / image.width;

                        } else {

                            ImgD.width = image.width;

                            ImgD.height = image.height;

                        }

                    } else {

                        if (image.height > FitHeight) {

                            ImgD.height = FitHeight;

                            ImgD.width = (image.width * FitHeight) / image.height;

                        } else {

                            ImgD.width = image.width;

                            ImgD.height = image.height;

                        }

                    }

                }

            }

 //-->

 </script>

 

调用方法：οnlοad=\"javascript:DrawImage(this,'150','112');\"