function URLEncode (clearString) {
                            var output = '';
                            var x = 0;
                            clearString = clearString.toString();
                            var regex = /(^[a-zA-Z0-9_.]*)/;
                            while (x < clearString.length) {
                            var match = regex.exec(clearString.substr(x));
                            if (match != null && match.length > 1 && match[1] != '') {
    	                        output += match[1];
                                x += match[1].length;
                                } else {
                                if (clearString[x] == ' ')
                                    output += '+';
                                else {
                                    var charCode = clearString.charCodeAt(x);
                                    var hexVal = charCode.toString(16);
                                    output += '%' + ( hexVal.length < 2 ? '0' : '' ) + hexVal.toUpperCase();
                                }
                                x++;
                                }
                            }
                            return output;
                            }

                        function submitenter(myfield, e)
                        {
	                        var keycode;
	                        if (window.event)
		                        keycode = window.event.keyCode;
	                        else if (e)
		                        keycode = e.which;
	                        else
		                        return true;
	                        if (keycode == 13)
	                        {
		                        SearchSite();
		                        return false;
	                        }
	                        else
		                        return true;
                        }
                        function SearchSite()
                        {
                            //search result destination URL
                            document.location.href='http://www.iste.org/search-results.aspx?cx=009361572988635565734:m4aecexuj6y&cof=FORID%3A11&ie=UTF-8&q=' + 
                            URLEncode(document.getElementById('q').value) + '&sa=Search';
                        }