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function handleRequest(request, response)
{
response.setHeader("Cache-Control", "no-cache", false);
var query = request.queryString;
switch (query) {
case "reset":
response.setHeader("Content-Type", "application/ecmascript", false);
setState("1l", "");
setState("1v", "");
setState("2l", "");
setState("2v", "");
break;
case "1l":
case "1v":
case "2l":
case "2v":
setState(query, getState(query) + "load");
response.setStatusLine("1.1", 302, "Found");
// redirect to a solid blue image
response.setHeader("Location", "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAADElEQVQI12NgYPgPAAEDAQDZqt2zAAAAAElFTkSuQmCC");
response.setHeader("Content-Type", "text/plain", false);
break;
case "waitforresult":
response.setHeader("Content-Type", "application/ecmascript", false);
response.write("var start = Date.now();\n");
// fall through!
case "waitforresult-internal":
response.setHeader("Content-Type", "application/ecmascript", false);
response.write("if ('" + getState("1l") + "' == 'load' && '" +
getState("1v") + "' == '' && '" +
getState("2l") + "' == 'load' && '" +
getState("2v") + "' == '') { \n");
response.write("setTimeout(function() {\n");
response.write("var s = document.createElement('script');\n");
response.write("s.src = 'visited_image_loading.sjs?result';\n");
response.write("document.body.appendChild(s);");
response.write("}, Math.max(100, 2 * (Date.now() - start)));\n");
response.write("} else setTimeout(function() {\n");
response.write("var s = document.createElement('script');\n");
response.write("s.src = 'visited_image_loading.sjs?waitforresult-internal';\n");
response.write("document.body.appendChild(s);");
response.write("}, 10);\n");
break;
case "result":
response.setHeader("Content-Type", "application/ecmascript", false);
response.write("is('" + getState("1l") +
"', 'load', 'image 1l should have been loaded once')\n");
response.write("is('" + getState("1v") +
"', '', 'image 1v should not have been loaded')\n");
response.write("is('" + getState("2l") +
"', 'load', 'image 2l should have been loaded once')\n");
response.write("is('" + getState("2v") +
"', '', 'image 2v should not have been loaded')\n");
response.write("SimpleTest.finish()");
break;
}
}