function jsonTester(){j('PHP/PHPtest.php?callback=alert("hi Im the callback function");')};function j(bk){var bA=document.getElementsByTagName("head").item(0);var scriptObj=document.createElement("script");scriptObj.setAttribute("type","text/javascript");scriptObj.setAttribute("src",bk);scriptObj.setAttribute("id",bk);bA.appendChild(scriptObj);}