html5-url-field.js

		// usage: onblur="absoluteURL(this);" on HTML5 'url' input
	
		function absoluteURL(url) {
			var string = url.value;
			if ( string != '' && !(string.match(/^https?:/)) ) {
				string = 'http://' + string;
			}
			else if (string == 'http://' || string == 'https://' )
			{
				string = '';
			}
			url.value = string;
			return true;
		}