/*****************************************************************************
 * Version stuff. This makes Version object looks like a static class.
 */

var Version = new Object();
var __ua = navigator.userAgent;
var __ie = __ua.indexOf( "MSIE" );

Version.NN = 
    __ua.indexOf( "Gecko" ) + 1 ? 
    parseFloat( __ua.substring( __ua.lastIndexOf( "/" ) + 1 ) ) : 
    __ua.indexOf( "Mozilla" ) + 1 && !( __ie + 1 ) ? 
    parseFloat( __ua.substring( __ua.indexOf( "/" ) + 1, __ua.indexOf(" ") ) ):
    0;
Version.IE = 
    __ie + 1 ? 
    parseFloat( __ua.substring( __ie + 5, __ua.indexOf( ";", __ie + 5 ) ) ) : 
    0;
Version.JS = 
    window.clearInterval ? 1.2 : window.blur ? 1.1 : 1.0;

delete __ua; delete __ie;

Version.ie = function( v ) { 
    return ( ( v <= this.IE ) || ( !v && this.IE ) ) ? true : false; 
}
Version.nn = function( v ) { 
    return ( ( v <= this.NN ) || ( !v && this.NN ) ) ? true : false; 
}
Version.js = function( v ) { 
    return v <= this.JS ? true : false; 
}

/*****************************************************************************
 * Others
 */

function assert( testValue ) {
    if( ! eval( testValue ) ) alert( "Assertion failed!" );
}

/*****************************************************************************
 * Error reporting for NN, for convenience sake.
 */

if( Version.NN < 6 ) {
    window.onerror = function( msg, url, line ) {
        var s = "Error: " + msg + " on line: " + line + "\n" + "URL: " + url;
        alert( s );
        return true;
    }
}

/*****************************************************************************
 * Misc
 */

function uclen( s ) {
    var len = 0;
    for( i = 0; i < s.length; i++ )
        len += ( s.charCodeAt( i ) > 127 ) ? 2 : 1;
    return len;
}

function xdebug( object ) {
    var s = '';
    for( f in object )
        s += f + ':' + object[f] + '<br>';
    var win = window.open();
    win.document.open();
    win.document.write( s );
    win.document.close();
}

var p_time1, p_time2;
function p_start() {
    p_time1 = new Date().getTime();
}
function p_stop() {
    p_time2 = new Date().getTime();
    return ( p_time2 - p_time1 );
}