function unhiliteMenuItems() {
    var langs = new Array('en', 'zh');
    for (var i = 0; i < langs.length; i++) {
        Page.hide(langs[i] + '_about_hilite');
        Page.hide(langs[i] + '_services_hilite');
        Page.hide(langs[i] + '_contact_hilite');
        Page.hide(langs[i] + '_portfolio_hilite');
    }
    Page.hide('english_button_hilite');
    Page.hide('chinese_button_hilite');
}


function hiliteMenuItem(id) {
    unhiliteMenuItems();
    var langs = new Array('en', 'zh');
    for (var i = 0; i < langs.length; i++) {
        Page.show(langs[i] + '_' + id + '_hilite');
    }
}


function hilite(id) {
    unhiliteMenuItems();
    Page.show(id);
}


function doInfoRequestSave(langpref) {

    if (langpref == null) {
        langpref = 'en';
    }

    var formDiv = Page.getById('do_info_request_input');
    var loadDiv = Page.getById('do_info_request_loading');

    var company = Page.getById('info_req_company');
    var name = Page.getById('info_req_contact_name');
    var phone = Page.getById('info_req_contact_phone');
    var email = Page.getById('info_req_contact_email');
    var message = Page.getById('info_req_message');

    if (company) {
        company = company.value;
    } else {
        company = '';
    }
    if (name && name.value) {
        name = name.value;
    } else {
        name = '';
    }
    if (phone && phone.value) {
        phone = phone.value;
    } else {
        phone = '';
    }
    if (email) {
        email = email.value;
    } else {
        email = '';
    }
    if (message && message.value) {
        message = message.value;
    } else {
        message = Page.getInnerHtml(message);
    }

    if (formDiv && loadDiv) {

        //Page.setVisible(formDiv, false);
        //Page.setVisible(loadDiv, true);
        //alert('<div style="height:' + Page.getHeight(formDiv) + 'px">' + Page.getInnerHtml(loadDiv) + '</div>');

        Page.setInnerHtml(
          formDiv,
          '<div style="height:' + Page.getHeight(formDiv) + 'px">' + Page.getInnerHtml(loadDiv) + '</div>'
        );
    }

    var query =
        'setlang=' + langpref
      + '&company=' + rawUrlEncode(company)
      + '&contact=' + rawUrlEncode(name)
      + '&phone=' + rawUrlEncode(phone)
      + '&email=' + rawUrlEncode(email)
      + '&message=' + rawUrlEncode(message)
      + '&DoSend=PrettyPleaseWithSugarOnTop';
      //alert(query);

    ajaxpost(
        'contact_information_request.php',
        query,
        'do_info_request_input'
    );
}


function doInfoRequestOkay(langpref) {
    if (langpref == null) {
        langpref = 'en';
    }
    var formDiv = Page.getById('do_info_request_input');
    var loadDiv = Page.getById('do_info_request_loading');
    if (formDiv && loadDiv) {
        //Page.setVisible(formDiv, false);
        //Page.setVisible(loadDiv, true);
        //alert('<div style="height:' + Page.getHeight(formDiv) + 'px">' + Page.getInnerHtml(loadDiv) + '</div>');

        Page.setInnerHtml(
          formDiv,
          '<div style="height:' + Page.getHeight(formDiv) + 'px">' + Page.getInnerHtml(loadDiv) + '</div>'
        );
    }
    ajaxpage(
        'contact_information_request.php?setlang=' + langpref,
        'do_info_request_input'
    );
}

function mbEscape(s) {
    var t = '';
    for (var i = 0; i < s.length; i++) {
        var ch = s.charAt(i);
        var cc = ch.charCodeAt(0)
        if (cc > 127) {
            t += '&#' + cc + ';';
        } else {
            t += ch;
        }
    }
    return t;
}



// ====================================================================
//       URLEncode and URLDecode functions
//
// Copyright Albion Research Ltd. 2002
// http://www.albionresearch.com/
//
// You may copy these functions providing that 
// (a) you leave this copyright notice intact, and 
// (b) if you use these functions on a publicly accessible
//     web site you include a credit somewhere on the web site 
//     with a link back to http://www.albionresarch.com/
//
// If you find or fix any bugs, please let us know at albionresearch.com
//
// SpecialThanks to Neelesh Thakur for being the first to
// report a bug in URLDecode() - now fixed 2003-02-19.
// ====================================================================
function rawUrlEncode(plaintext) {
    plaintext = mbEscape(plaintext);
	// The Javascript escape and unescape functions do not correspond
	// with what browsers actually do...
	var SAFECHARS = "0123456789" +					// Numeric
					"ABCDEFGHIJKLMNOPQRSTUVWXYZ" +	// Alphabetic
					"abcdefghijklmnopqrstuvwxyz" +
					"-_.!~*'()";					// RFC2396 Mark characters
	var HEX = "0123456789ABCDEF";

	var encoded = "";
	for (var i = 0; i < plaintext.length; i++ ) {
		var ch = plaintext.charAt(i);
	    if (ch == " ") {
		    encoded += "+";				// x-www-urlencoded, rather than %20
		} else if (SAFECHARS.indexOf(ch) != -1) {
		    encoded += ch;
		} else {
		    var charCode = ch.charCodeAt(0);
			if (charCode > 255) {
			    alert( "Unicode Character '" 
                        + ch 
                        + "' cannot be encoded using standard URL encoding.\n" +
				          "(URL encoding only supports 8-bit characters.)\n" +
						  "A space (+) will be substituted." );
				encoded += "+";
			} else {
				encoded += "%";
				encoded += HEX.charAt((charCode >> 4) & 0xF);
				encoded += HEX.charAt(charCode & 0xF);
			}
		}
	} // for

	return encoded;
}

function rawUrlDecode(encoded) {
   // Replace + with ' '
   // Replace %xx with equivalent character
   // Put [ERROR] in output if %xx is invalid.
   var HEXCHARS = "0123456789ABCDEFabcdef"; 
   var plaintext = "";
   var i = 0;
   while (i < encoded.length) {
       var ch = encoded.charAt(i);
	   if (ch == "+") {
	       plaintext += " ";
		   i++;
	   } else if (ch == "%") {
			if (i < (encoded.length-2) 
					&& HEXCHARS.indexOf(encoded.charAt(i+1)) != -1 
					&& HEXCHARS.indexOf(encoded.charAt(i+2)) != -1 ) {
				plaintext += unescape( encoded.substr(i,3) );
				i += 3;
			} else {
				alert( 'Bad escape combination near ...' + encoded.substr(i) );
				plaintext += "%[ERROR]";
				i++;
			}
		} else {
		   plaintext += ch;
		   i++;
		}
	} // while
    return plaintext;
};