function disp(){
var now= new Date();

var watch1 = now.toLocaleString();

document.form1.field1.value = watch1;

setTimeout("disp()",1000);

}


<!--//
//By kitayan HTML タグであそぼう！http://www4.osk.3web.ne.jp/~kitayan/
speed=3;//点滅スピード
my_cnt=0;
my_cnt2=0;
//背景色設定
	back_color=new Array;
	back_color[0]="#FF0033";
	back_color[1]="#FFFFFF";
//フォントカラー設定
	font_color=new Array;
	font_color[0]="#FFFFFF";
	font_color[1]="#000000";
		
	function my_bgcolor()
		{
		if(document.all)
				{document.all("t1").bgColor=back_color[my_cnt]
				document.all("t1").style.color=font_color[my_cnt];
				}
				my_cnt++;
				if(my_cnt >= back_color.length)my_cnt=0;
				setTimeout('my_bgcolor()',speed*1000);
				}
//-->


/**
 * http.js: utilities for scripted HTTP requests
 *
 * From the book JavaScript: The Definitive Guide, 5th Edition,
 * by David Flanagan. Copyright 2006 O'Reilly Media, Inc. (ISBN: 0596101996)
 */

// Make sure we haven't already been loaded
var HTTP;
if (HTTP && (typeof HTTP != "object" || HTTP.NAME))
    throw new Error("Namespace 'HTTP' already exists");

// Create our namespace, and specify some meta-information
HTTP = {};
HTTP.NAME = "HTTP";    // The name of this namespace
HTTP.VERSION = 1.0;    // The version of this namespace

// This is a list of XMLHttpRequest creation factory functions to try
HTTP._factories = [
    function() { return new XMLHttpRequest(); },
    function() { return new ActiveXObject("Msxml2.XMLHTTP"); },
    function() { return new ActiveXObject("Microsoft.XMLHTTP"); }
];

// When we find a factory that works, store it here
HTTP._factory = null;

/**
 * Create and return a new XMLHttpRequest object.
 * 
 * The first time we're called, try the list of factory functions until
 * we find one that returns a nonnull value and does not throw an
 * exception.  Once we find a working factory, remember it for later use.
 */
HTTP.newRequest = function() {
    if (HTTP._factory != null) return HTTP._factory();

    for(var i = 0; i < HTTP._factories.length; i++) {
        try {
            var factory = HTTP._factories[i];
            var request = factory();
            if (request != null) {
                HTTP._factory = factory;
                return request;
            }
        }
        catch(e) {
            continue;
        }
    }

    // If we get here, none of the factory candidates succeeded,
    // so throw an exception now and for all future calls.
    HTTP._factory = function() {
        throw new Error("XMLHttpRequest not supported");
    }
    HTTP._factory(); // Throw an error
}

/**
 * Use XMLHttpRequest to fetch the contents of the specified URL using
 * an HTTP GET request.  When the response arrives, pass it (as plain
 * text) to the specified callback function.
 * 
 * This function does not block and has no return value.
 */
HTTP.getText = function(url, callback) {
    var request = HTTP.newRequest();
    request.onreadystatechange = function() {
        if (request.readyState == 4 && request.status == 200)
            callback(request.responseText);
    }
    request.open("GET", url);
    request.send(null);
};

/* 対象IDを可変にするための変更 20090411 */
HTTP.getText2 = function(url, callback , idname) {
    var request = HTTP.newRequest();
    request.onreadystatechange = function() {
        if (request.readyState == 4 && request.status == 200)
            callback(request.responseText,idname);
    }
    request.open("GET", url);
    request.send(null);
};

/**
 * Use XMLHttpRequest to fetch the contents of the specified URL using
 * an HTTP GET request.  When the response arrives, pass it (as a parsed
 * XML Document object) to the specified callback function.
 * 
 * This function does not block and has no return value.
 */
HTTP.getXML = function(url, callback) {
    var request = HTTP.newRequest();
    request.onreadystatechange = function() {
        if (request.readyState == 4 && request.status == 200)
            callback(request.responseXML);
    }
    request.open("GET", url);
    request.send(null);
};

/**
 * Use an HTTP HEAD request to obtain the headers for the specified URL.
 * When the headers arrive, parse them with HTTP.parseHeaders() and pass the
 * resulting object to the specified callback function. If the server returns
 * an error code, invoke the specified errorHandler function instead.  If no
 * error handler is specified, pass null to the callback function.
 */
HTTP.getHeaders = function(url, callback, errorHandler) {
    var request = HTTP.newRequest();
    request.onreadystatechange = function() {
        if (request.readyState == 4) {
            if (request.status == 200) {
                callback(HTTP.parseHeaders(request));
            }
            else {
                if (errorHandler) errorHandler(request.status,
                                               request.statusText);
                else callback(null);
            }
        }
    }
    request.open("HEAD", url);
    request.send(null);
};

/**
 * Parse the response headers from an XMLHttpRequest object and return
 * the header names and values as property names and values of a new object.
 */
HTTP.parseHeaders = function(request) {
    var headerText = request.getAllResponseHeaders();  // Text from the server
    var headers = {}; // This will be our return value
    var ls = /^\s*/;  // Leading space regular expression
    var ts = /\s*$/;  // Trailing space regular expression

    // Break the headers into lines
    var lines = headerText.split("\n");
    // Loop through the lines
    for(var i = 0; i < lines.length; i++) {
        var line = lines[i];
        if (line.length == 0) continue;  // Skip empty lines
        // Split each line at first colon, and trim whitespace away
        var pos = line.indexOf(':');     
        var name = line.substring(0, pos).replace(ls, "").replace(ts, "");
        var value = line.substring(pos+1).replace(ls, "").replace(ts, "");
        // Store the header name/value pair in a JavaScript object
        headers[name] = value;
    }
    return headers;
};

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