图片按比例显示

< script > // 按比例显示图片 // 引用方法： // <img id="myPic1" οnerrοr="drawImg(this,120,60);" οnlοad="drawImg(this,120,60);" src="http://www.hao123.com/logo.gif"/> // οnerrοr="drawImg(this,120,60);" 加载出错照样执行 // 覃雁禄2007-01-25 function  drawImg(obj,FitWidth,FitHeight){   var  image = obj;   if (image.width > 0   &&  image.height > 0 ){     if (image.width / image.height >=  FitWidth / FitHeight){       if (image.width > FitWidth){        image.width = FitWidth;        image.height = (image.height * FitWidth) / image.width;      }    }     else {       if (image.height > FitHeight){        image.height = FitHeight;        image.width = (image.width * FitHeight) / image.height;      }    }  }} </ script >