Get real image width and height with Javascript in Safari/Chrome?

var pic = $("img")

// need to remove these in of case img-element has set width and height
pic.removeAttr("width");
pic.removeAttr("height");

var pic_real_width = pic.width();
var pic_real_height = pic.height();

var img = $("img")[0]; // Get my img elem
var pic_real_width, pic_real_height;
$("<img/>") // Make in memory copy of image to avoid css issues
    .attr("src", $(img).attr("src"))
    .load(function() {
        pic_real_width = this.width;   // Note: $(this).width() will not
        pic_real_height = this.height; // work for in memory images.
    });

function getOriginalWidthOfImg(img_element) {
    var t = new Image();
    t.src = (img_element.getAttribute ? img_element.getAttribute("src") : false) || img_element.src;
    return t.width;
}

jQuery(document).ready(function(){
  if (jQuery.browser.safari && document.readyState != "complete"){
    //console.info('ready...');
    setTimeout( arguments.callee, 100 );
    return;
  }
  ... (rest of function)

$("img").one("load", function(){
    var img = this;
    setTimeout(function(){
        // do something based on img.width and/or img.height
    }, 0);
});

$(window).load(function() {
  var pic = $('img');

  pic.removeAttr("width");
  pic.removeAttr("height");

  alert( pic.width() );
  alert( pic.height() );
});

(function( $ ){
   $.fn.getDimensions=function(){
         alert("First example:This works only for HTML code without CSS width/height definition.");
         w=$(this, 'img')[0].width;
         h=$(this, 'img')[0].height;

         alert("This is a width/height on your monitor: " + $(this, 'img')[0].width+"/"+$(this, 'img')[0].height);

         //This is bad practice - it shows on your monitor
         $(this, 'img')[0].removeAttribute( "width" );
         $(this, 'img')[0].removeAttribute( "height" );
         alert("This is a bad effect of view after attributes removing, but we get right dimensions: "+  $(this, 'img')[0].width+"/"+$(this, 'img')[0].height);
         //I'am going to repare it
         $(this, 'img')[0].width=w;
         $(this, 'img')[0].height=h;
         //This is a good practice - it doesn't show on your monitor
         ku=$(this, 'img').clone(); //We will work with a clone
         ku.attr( "id","mnbv1lk87jhy0utrd" );//Markup clone for a final removing
         ku[0].removeAttribute( "width" );
         ku[0].removeAttribute( "height" );
         //Now we still get 0
         alert("There are still 0 before a clone appending to document: "+ $(ku)[0].width+"/"+$(ku)[0].height);
         //Hide a clone
         ku.css({"visibility" : "hidden",'position':'absolute','left':'-9999px'});
         //A clone appending
         $(document.body).append (ku[0]);
         alert("We get right dimensions: "+ $(ku)[0].width+"/"+$(ku)[0].height);
         //Remove a clone
         $("#mnbv1lk87jhy0utrd").remove();

         //But a next resolution is the best of all. It works in case of CSS definition of dimensions as well.
         alert("But if you want to read real dimensions for image with CSS class definition outside of img element, you can't do it with a clone of image. Clone method is working with CSS dimensions, a clone has dimensions as well as in CSS class. That's why you have to work with a new img element.");
         imgcopy=$('<img src="'+ $(this, 'img').attr('src') +'" />');//new object
         imgcopy.attr( "id","mnbv1lk87jhy0aaa" );//Markup for a final removing
         imgcopy.css({"visibility" : "hidden",'position':'absolute','left':'-9999px'});//hide copy
         $(document.body).append (imgcopy);//append to document
         alert("We get right dimensions: "+ imgcopy.width()+"/"+imgcopy.height());
         $("#mnbv1lk87jhy0aaa").remove();


   }
})( jQuery );

$(document).ready(function(){

   $("img.toreaddimensions").click(function(){$(this).getDimensions();});
});

$(this).clone().removeAttr("width").attr("width");
$(this).clone().removeAttr("height").attr("height);

$("#myImg").one("load",function(){
  //do something, like getting image width/height
}).each(function(){
  if(this.complete) $(this).trigger("load");
});

graph= $('<img/>', {"src":'mySRC', id:'graph-img'});
    graph.bind('load', function (){
        wid = graph.attr('width');
        hei = graph.attr('height');

        graph.dialog({ autoOpen: false, title: 'MyGraphTitle', height:hei, width:wid })
    })

$(window).load(function(){

   //these all work

   $('img#someId').css('width');
   $('img#someId').width();
   $('img#someId').get(0).style.width;
   $('img#someId').get(0).width;

});

var pic_real_width   = 0,
    img_src_no_cache = $('img#someId').attr('src') + '?cache=' + Date.now();

$('<img/>').attr('src', img_src_no_cache).load(function(){

   pic_real_width = this.width;

});

//make json call to server to get image size
$.getJSON("http://server/getimagesize.php",
{"src":url},
SetImageWidth
);

//callback function
function SetImageWidth(data) {

    var wrap = $("div#image_gallery #image_wrap");

    //remove height
     wrap.find("img").removeAttr('height');
    //remove height
     wrap.find("img").removeAttr('width');

    //set image width
    if (data.width > 635) {
        wrap.find("img").width(635);
    }
    else {
         wrap.find("img").width(data.width);
    }
}

<?php

$image_width = 0;
$image_height = 0;

if (isset ($_REQUEST['src']) && is_file($_SERVER['DOCUMENT_ROOT'] . $_REQUEST['src'])) {

    $imageinfo = getimagesize($_SERVER['DOCUMENT_ROOT'].$_REQUEST['src']);
    if ($imageinfo) {
       $image_width=  $imageinfo[0];
       $image_height= $imageinfo[1];
    }
}

$arr = array ('width'=>$image_width,'height'=>$image_height);

echo json_encode($arr);

?>