javascript file loading

util.js

function loadJQuery() {
    var oScript = document.createElement("script");
    oScript.type = "text/javascript";
    oScript.charset = "utf-8";		  
    oScript.src = "http://code.jquery.com/jquery-1.6.2.min.js";	
    document.getElementsByTagName("head")[0].appendChild(oScript);
}