var submit=0;
var max_width = 750;

function sybbs_resize_info(img) {
  if (img.width > max_width) {
    var rate = max_width/img.width;
    img.visibleImgObj.width = Math.round (img.width * rate);
    img.visibleImgObj.height = Math.round(img.height * rate);
  }
  else {
    img.visibleImgObj.width = img.width;
    img.visibleImgObj.height = img.height;
  }
}
function sybbs_resize_image(imgObj) {
  var imgOriginal = new Image();
  imgOriginal.visibleImgObj = imgObj;
  imgOriginal.onload = function() { sybbs_resize_info(this); }
  imgOriginal.src = imgObj.src;
}