getURLParameter("query") => "github arun4webtech"
  getURLParameter("gsl") => "psy-ab.3"
  getURLParameter("input",parent.location.href) => "data from parent window"

isIE() => 8 (in IE 8)
isIE() => false (in chrome)

function callbackFunction(){console.log("JavaScriptUtility script loaded")}
loadScript("https://raw.githubusercontent.com/arun4webtech/JavaScriptUtility/master/JSutility.js",callbackFunction)