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leinfelder
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// Copyright 2005 Google Inc.
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// All Rights Reserved
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//
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// Miscellania that support the ajaxslt implementation.
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//
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// Author: Steffen Meschkat <mesch@google.com>
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//
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function el(i) {
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return document.getElementById(i);
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}
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function px(x) {
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return x + 'px';
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}
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// Split a string s at all occurrences of character c. This is like
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// the split() method of the string object, but IE omits empty
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// strings, which violates the invariant (s.split(x).join(x) == s).
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function stringSplit(s, c) {
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var a = s.indexOf(c);
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if (a == -1) {
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return [ s ];
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}
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var parts = [];
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parts.push(s.substr(0,a));
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while (a != -1) {
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var a1 = s.indexOf(c, a + 1);
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if (a1 != -1) {
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parts.push(s.substr(a + 1, a1 - a - 1));
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} else {
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parts.push(s.substr(a + 1));
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}
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a = a1;
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}
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return parts;
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}
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// Returns the text value if a node; for nodes without children this
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// is the nodeValue, for nodes with children this is the concatenation
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// of the value of all children.
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function xmlValue(node) {
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if (!node) {
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return '';
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}
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var ret = '';
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if (node.nodeType == DOM_TEXT_NODE ||
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node.nodeType == DOM_CDATA_SECTION_NODE ||
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node.nodeType == DOM_ATTRIBUTE_NODE) {
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ret += node.nodeValue;
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} else if (node.nodeType == DOM_ELEMENT_NODE ||
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node.nodeType == DOM_DOCUMENT_NODE ||
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node.nodeType == DOM_DOCUMENT_FRAGMENT_NODE) {
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for (var i = 0; i < node.childNodes.length; ++i) {
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ret += arguments.callee(node.childNodes[i]);
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}
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}
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return ret;
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}
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// Returns the representation of a node as XML text.
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function xmlText(node) {
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var ret = '';
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if (node.nodeType == DOM_TEXT_NODE) {
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ret += xmlEscapeText(node.nodeValue);
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} else if (node.nodeType == DOM_ELEMENT_NODE) {
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ret += '<' + node.nodeName;
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for (var i = 0; i < node.attributes.length; ++i) {
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var a = node.attributes[i];
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if (a && a.nodeName && a.nodeValue) {
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ret += ' ' + a.nodeName;
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ret += '="' + xmlEscapeAttr(a.nodeValue) + '"';
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}
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}
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if (node.childNodes.length == 0) {
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ret += '/>';
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} else {
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ret += '>';
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for (var i = 0; i < node.childNodes.length; ++i) {
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ret += arguments.callee(node.childNodes[i]);
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}
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ret += '</' + node.nodeName + '>';
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}
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} else if (node.nodeType == DOM_DOCUMENT_NODE ||
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node.nodeType == DOM_DOCUMENT_FRAGMENT_NODE) {
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for (var i = 0; i < node.childNodes.length; ++i) {
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ret += arguments.callee(node.childNodes[i]);
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}
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}
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return ret;
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}
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// Applies the given function to each element of the array.
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function mapExec(array, func) {
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for (var i = 0; i < array.length; ++i) {
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func(array[i]);
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}
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}
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// Returns an array that contains the return value of the given
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// function applied to every element of the input array.
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function mapExpr(array, func) {
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var ret = [];
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for (var i = 0; i < array.length; ++i) {
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ret.push(func(array[i]));
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}
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return ret;
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};
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// Reverses the given array in place.
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function reverseInplace(array) {
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for (var i = 0; i < array.length / 2; ++i) {
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var h = array[i];
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var ii = array.length - i - 1;
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array[i] = array[ii];
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array[ii] = h;
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}
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}
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// Shallow-copies an array.
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function copyArray(dst, src) {
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for (var i = 0; i < src.length; ++i) {
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dst.push(src[i]);
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}
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}
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function assert(b) {
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if (!b) {
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throw 'assertion failed';
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}
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}
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// Based on
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// <http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247>
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var DOM_ELEMENT_NODE = 1;
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var DOM_ATTRIBUTE_NODE = 2;
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var DOM_TEXT_NODE = 3;
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var DOM_CDATA_SECTION_NODE = 4;
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var DOM_ENTITY_REFERENCE_NODE = 5;
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var DOM_ENTITY_NODE = 6;
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var DOM_PROCESSING_INSTRUCTION_NODE = 7;
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var DOM_COMMENT_NODE = 8;
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var DOM_DOCUMENT_NODE = 9;
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var DOM_DOCUMENT_TYPE_NODE = 10;
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var DOM_DOCUMENT_FRAGMENT_NODE = 11;
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var DOM_NOTATION_NODE = 12;
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var xpathdebug = false; // trace xpath parsing
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var xsltdebug = false; // trace xslt processing
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// Escape XML special markup chracters: tag delimiter < > and entity
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// reference start delimiter &. The escaped string can be used in XML
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// text portions (i.e. between tags).
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function xmlEscapeText(s) {
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return s.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>');
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}
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// Escape XML special markup characters: tag delimiter < > entity
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// reference start delimiter & and quotes ". The escaped string can be
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// used in double quoted XML attribute value portions (i.e. in
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// attributes within start tags).
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function xmlEscapeAttr(s) {
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return xmlEscapeText(s).replace(/\"/g, '"');
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}
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// Escape markup in XML text, but don't touch entity references. The
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// escaped string can be used as XML text (i.e. between tags).
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function xmlEscapeTags(s) {
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return s.replace(/</g, '<').replace(/>/g, '>');
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}
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// An implementation of the debug log.
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var logging__ = false;
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function Log() {};
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Log.lines = [];
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Log.write = function(s) {
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if (logging__) {
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this.lines.push(xmlEscapeText(s));
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this.show();
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}
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};
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// Writes the given XML with every tag on a new line.
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Log.writeXML = function(xml) {
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if (logging__) {
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var s0 = xml.replace(/</g, '\n<');
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var s1 = xmlEscapeText(s0);
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var s2 = s1.replace(/\s*\n(\s|\n)*/g, '<br/>');
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this.lines.push(s2);
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this.show();
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}
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}
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// Writes without any escaping
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Log.writeRaw = function(s) {
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if (logging__) {
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this.lines.push(s);
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this.show();
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}
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}
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Log.clear = function() {
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if (logging__) {
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var l = this.div();
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l.innerHTML = '';
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this.lines = [];
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}
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}
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Log.show = function() {
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var l = this.div();
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l.innerHTML += this.lines.join('<br/>') + '<br/>';
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this.lines = [];
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l.scrollTop = l.scrollHeight;
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}
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Log.div = function() {
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var l = document.getElementById('log');
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if (!l) {
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l = document.createElement('div');
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l.id = 'log';
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l.style.position = 'absolute';
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l.style.right = '5px';
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l.style.top = '5px';
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l.style.width = '250px';
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l.style.height = '150px';
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l.style.overflow = 'auto';
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l.style.backgroundColor = '#f0f0f0';
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l.style.border = '1px solid gray';
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l.style.fontSize = '10px';
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l.style.padding = '5px';
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document.body.appendChild(l);
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}
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return l;
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}
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function Timer() {}
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Timer.start = function() {}
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Timer.end = function() {}
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