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copied!<p>I know that different web servers have different URL lengths, but they are often on the order of 2-6,000 chars.</p> <p>Here's the thing -- if the data being sent to the server is supposed to be stored somewhere, you probably ought to make this a POST request. POST will handle large datasets much more robustly, because the form data goes in the request body. More importantly, GET requests are supposed to be idempotent -- submitting the same request over and over should always produce the same results, and shouldn't change anything elsewhere. If this request is not like that, it should be POST.</p> <p>You may want to try using something like LiveHTTPHeaders (for Firefox) or Fiddler to examine the request that actually gets sent. Compare that to what you expect should be sent.</p> <p>EDIT: Here's an attempt to modify your request to use a POST. Based on my cursory glance at the jq docs, it looks like you may be able to rely on jq to automatically serialize your arrays for you.</p> <pre><code>\$('#HTML_EXECUTE_BUTTON').click(function(event) { \$("#prog").html('<h2>WORKING - <img src="./lib/jqueryui_start/development-bundle/themes/base/images/ui-anim_basic_16x16.gif" /> </h2>'); var params = \$("#mec_html_step_B_inputs").serializeArray(); var params1 = \$("#mec_html_step_C_inputs").serializeArray(); var params2 = \$("#mec_html_step_D_inputs").serializeArray(); var params3 = \$("#mec_html_step_A_inputs").serializeArray(); params = \$.merge(params, params1); params = \$.merge(params, params2); params = \$.merge(params, params3); params.push({ name: 'menu_mode', value: '5' }); params.push({ name: 'mode', value : '\$mode'}); params.push({ name: 'modetype', value: '\$GLOBAL_MQA_MODE' }); \$("#HTML_EXECUTE_BUTTON").css("background-color",""); my_window = window.open("", "DEBUG WINDOW", "status=1,width=350,height=150"); //for debugging my_window.document.write(dump(params)); //for debugging alert(params.length); // for debugging jQuery.ajax({ url: './cgi_scripts/$GLOB_SCRIPT_NAME', type: 'POST', data: params, error: function(jXHR, sStatus, eError) { // react to failures }, success: function(data, textStatus, jqXHR) { // react to success \$("#grapharea").html(data); \$("#prog").html(" "); } }); event.preventDefault(); return false; }); </code></pre> <p>(I also changed your HTML generation to use proper quotes in the markup. No biggie.)</p> <p>EDIT 2: Now, click event is captured and consumed by this handler.</p>

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