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copied!<p>Your <code>load_bk_photo</code> function has some issues (missing semi-colons, creating global variables), try changing to this:</p> <pre><code>function load_bk_photo(){ //we can use the `var` keyword once and separate each variable declaration by a comma, then finish all the declarations with a semi-colon var activeId = '<%=(activeTempStoreId)%>', redStr_id = "side1", d = new Date(), time_temp = d.getTime(), photoUrl = "photos/merged_" + activeId + "_" + redStr_id+".png?" + time_temp; alert ("timebbb = " + time_temp ); //you can use one `.css()` function call to do both operations $('#resizable-img').css({ 'background-image' : 'url("' + photoUrl + '")', display : 'block' }); } </code></pre> <p>You were creating global variables which is only necessary if you are changing the value of variables outside the scope of this function.</p> <p>Onto your main question, you can set a <code>load</code> event handler for the <code><iframe></code> element as a callback function on your upload:</p> <pre><code>$('#MyFrame').on('load', function () { //The iframe has loaded and you can do what you want, including get the contents of the iframe (server-response) var response = $(this).contents().find('body').text(); }); </code></pre> <p>Make sure to set this binding before the source of the <code><iframe></code> is changed.</p> <p>Note that <code>.on()</code> is new in jQuery 1.7 and in this case is the same as <code>.bind()</code>.</p> <p><code>.on()</code>: <a href="http://api.jquery.com/on" rel="nofollow">http://api.jquery.com/on</a></p> <p><strong>UPDATE</strong></p> <p>I don't know asp classic but if you output something like <code>storeWidth|storeHeight</code> in your asp code then you can get that response in you JavaScript and do what you want with it:</p> <pre><code>$('#MyFrame').on('load', function () { //The iframe has loaded and you can do what you want, including get the contents of the iframe (server-response) var response = $(this).contents().find('body').text().split('|'); alert(response[0] + 'x' + response[1] + 'px'); }); </code></pre>

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