jQuery Load Script Function

jQueryLoadScript

function loadScript(url, callback)
{
	var head = document.getElementsByTagName("head")[0];
	var script = document.createElement("script");
	script.src = url;

	// Attach handlers for all browsers
	var done = false;
	script.onload = script.onreadystatechange = function()
	{
		if( !done && ( !this.readyState 
					|| this.readyState == "loaded" 
					|| this.readyState == "complete") )
		{
			done = true;

			// Continue your code
			callback();

			// Handle memory leak in IE
			script.onload = script.onreadystatechange = null;
			head.removeChild( script );
		}
	};

	head.appendChild(script);
}

// Usage: 
// This code loads jQuery and executes some code when jQuery is loaded
loadScript("http://code.jquery.com/jquery-latest.js", function()
{
	$('my_element').hide();
});