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// Wikipedia JavaScript support functions
var clientPC = navigator.userAgent.toLowerCase(); // Get client info
var is_gecko = ((clientPC.indexOf('gecko')!=-1) && (clientPC.indexOf('spoofer')==-1)
&& (clientPC.indexOf('khtml') == -1) && (clientPC.indexOf('netscape/7.0')==-1));
var is_safari = ((clientPC.indexOf('AppleWebKit')!=-1) && (clientPC.indexOf('spoofer')==-1));
var is_khtml = (navigator.vendor == 'KDE' || ( document.childNodes && !document.all && !navigator.taintEnabled ));
if (clientPC.indexOf('opera')!=-1) {
var is_opera = true;
var is_opera_preseven = (window.opera && !document.childNodes);
var is_opera_seven = (window.opera && document.childNodes);
}
// add any onload functions in this hook (please don't hard-code any events in the xhtml source)
var doneOnloadHook;
if ( !window.onloadFuncts )
var onloadFuncts = [];
function addOnloadHook( hookFunct )
{
// Allows add-on scripts to add onload functions
onloadFuncts[onloadFuncts.length] = hookFunct;
}
function runOnloadHook()
{
// don't run anything below this for non-dom browsers
if ( doneOnloadHook || !( document.getElementById && document.getElementsByTagName ) )
return;
histrowinit();
unhidetzbutton();
tabbedprefs();
akeytt();
scrollEditBox();
// Run any added-on functions
for ( var i = 0; i < onloadFuncts.length; i++ )
onloadFuncts[i]();
doneOnloadHook = true;
}
function hookEvent( hookName, hookFunct )
{
if ( window.addEventListener )
addEventListener( hookName, hookFunct, false );
else if ( window.attachEvent )
attachEvent( "on" + hookName, hookFunct );
}
hookEvent( "load", runOnloadHook );
// document.write special stylesheet links
if(typeof stylepath != 'undefined' && typeof skin != 'undefined') {
if (is_opera_preseven) {
document.write('<link rel="stylesheet" type="text/css" href="'+stylepath+'/'+skin+'/Opera6Fixes.css">');
} else if (is_opera_seven) {
document.write('<link rel="stylesheet" type="text/css" href="'+stylepath+'/'+skin+'/Opera7Fixes.css">');
} else if (is_khtml) {
document.write('<link rel="stylesheet" type="text/css" href="'+stylepath+'/'+skin+'/KHTMLFixes.css">');
}
}
// Un-trap us from framesets
if( window.top != window ) window.top.location = window.location;
// for enhanced RecentChanges
function toggleVisibility( _levelId, _otherId, _linkId) {
var thisLevel = document.getElementById( _levelId );
var otherLevel = document.getElementById( _otherId );
var linkLevel = document.getElementById( _linkId );
if ( thisLevel.style.display == 'none' ) {
thisLevel.style.display = 'block';
otherLevel.style.display = 'none';
linkLevel.style.display = 'inline';
} else {
thisLevel.style.display = 'none';
otherLevel.style.display = 'inline';
linkLevel.style.display = 'none';
}
}
// page history stuff
// attach event handlers to the input elements on history page
function histrowinit () {
hf = document.getElementById('pagehistory');
if(!hf) return;
lis = hf.getElementsByTagName('li');
for (i=0;i<lis.length;i++) {
inputs=lis[i].getElementsByTagName('input');
if(inputs[0] && inputs[1]) {
inputs[0].onclick = diffcheck;
inputs[1].onclick = diffcheck;
}
}
diffcheck();
}
// check selection and tweak visibility/class onclick
function diffcheck() {
var dli = false; // the li where the diff radio is checked
var oli = false; // the li where the oldid radio is checked
hf = document.getElementById('pagehistory');
if(!hf) return;
lis = hf.getElementsByTagName('li');
for (i=0;i<lis.length;i++) {
inputs=lis[i].getElementsByTagName('input');
if(inputs[1] && inputs[0]) {
if(inputs[1].checked || inputs[0].checked) { // this row has a checked radio button
if(inputs[1].checked && inputs[0].checked && inputs[0].value == inputs[1].value) return false;
if(oli) { // it's the second checked radio
if(inputs[1].checked) {
oli.className = "selected";
return false
}
} else if (inputs[0].checked) {
return false;
}
if(inputs[0].checked) dli = lis[i];
if(!oli) inputs[0].style.visibility = 'hidden';
if(dli) inputs[1].style.visibility = 'hidden';
lis[i].className = "selected";
oli = lis[i];
} else { // no radio is checked in this row
if(!oli) inputs[0].style.visibility = 'hidden';
else inputs[0].style.visibility = 'visible';
if(dli) inputs[1].style.visibility = 'hidden';
else inputs[1].style.visibility = 'visible';
lis[i].className = "";
}
}
}
}
// generate toc from prefs form, fold sections
// XXX: needs testing on IE/Mac and safari
// more comments to follow
function tabbedprefs() {
var prefform = document.getElementById('preferences');
if(!prefform || !document.createElement) return;
if(prefform.nodeName.toLowerCase() == 'a') return; // Occasional IE problem
prefform.className = prefform.className + 'jsprefs';
var sections = new Array();
children = prefform.childNodes;
var seci = 0;
for(i=0;i<children.length;i++) {
if(children[i].nodeName.toLowerCase() == 'fieldset') {
children[i].id = 'prefsection-' + seci;
children[i].className = 'prefsection';
if(is_opera || is_khtml) children[i].className = 'prefsection operaprefsection';
legends = children[i].getElementsByTagName('legend');
sections[seci] = new Object();
legends[0].className = 'mainLegend';
if(legends[0] && legends[0].firstChild.nodeValue)
sections[seci].text = legends[0].firstChild.nodeValue;
else
sections[seci].text = '# ' + seci;
sections[seci].secid = children[i].id;
seci++;
if(sections.length != 1) children[i].style.display = 'none';
else var selectedid = children[i].id;
}
}
var toc = document.createElement('ul');
toc.id = 'preftoc';
toc.selectedid = selectedid;
for(i=0;i<sections.length;i++) {
var li = document.createElement('li');
if(i == 0) li.className = 'selected';
var a = document.createElement('a');
a.href = '#' + sections[i].secid;
a.onmousedown = a.onclick = uncoversection;
a.appendChild(document.createTextNode(sections[i].text));
a.secid = sections[i].secid;
li.appendChild(a);
toc.appendChild(li);
}
prefform.parentNode.insertBefore(toc, prefform.parentNode.childNodes[0]);
document.getElementById('prefsubmit').id = 'prefcontrol';
}
function uncoversection() {
oldsecid = this.parentNode.parentNode.selectedid;
newsec = document.getElementById(this.secid);
if(oldsecid != this.secid) {
ul = document.getElementById('preftoc');
document.getElementById(oldsecid).style.display = 'none';
newsec.style.display = 'block';
ul.selectedid = this.secid;
lis = ul.getElementsByTagName('li');
for(i=0;i< lis.length;i++) {
lis[i].className = '';
}
this.parentNode.className = 'selected';
}
return false;
}
// Timezone stuff
// tz in format [+-]HHMM
function checkTimezone( tz, msg ) {
var localclock = new Date();
// returns negative offset from GMT in minutes
var tzRaw = localclock.getTimezoneOffset();
var tzHour = Math.floor( Math.abs(tzRaw) / 60);
var tzMin = Math.abs(tzRaw) % 60;
var tzString = ((tzRaw >= 0) ? "-" : "+") + ((tzHour < 10) ? "0" : "") + tzHour + ((tzMin < 10) ? "0" : "") + tzMin;
if( tz != tzString ) {
var junk = msg.split( '$1' );
document.write( junk[0] + "UTC" + tzString + junk[1] );
}
}
function unhidetzbutton() {
tzb = document.getElementById('guesstimezonebutton')
if(tzb) tzb.style.display = 'inline';
}
// in [-]HH:MM format...
// won't yet work with non-even tzs
function fetchTimezone() {
// FIXME: work around Safari bug
var localclock = new Date();
// returns negative offset from GMT in minutes
var tzRaw = localclock.getTimezoneOffset();
var tzHour = Math.floor( Math.abs(tzRaw) / 60);
var tzMin = Math.abs(tzRaw) % 60;
var tzString = ((tzRaw >= 0) ? "-" : "") + ((tzHour < 10) ? "0" : "") + tzHour +
":" + ((tzMin < 10) ? "0" : "") + tzMin;
return tzString;
}
function guessTimezone(box) {
document.getElementsByName("wpHourDiff")[0].value = fetchTimezone();
}
function showTocToggle() {
if (document.createTextNode) {
// Uses DOM calls to avoid document.write + XHTML issues
var linkHolder = document.getElementById('toctitle')
if (!linkHolder) return;
var outerSpan = document.createElement('span');
outerSpan.className = 'toctoggle';
var toggleLink = document.createElement('a');
toggleLink.id = 'togglelink';
toggleLink.className = 'internal';
toggleLink.href = 'javascript:toggleToc()';
toggleLink.appendChild(document.createTextNode(tocHideText));
outerSpan.appendChild(document.createTextNode('['));
outerSpan.appendChild(toggleLink);
outerSpan.appendChild(document.createTextNode(']'));
linkHolder.appendChild(document.createTextNode(' '));
linkHolder.appendChild(outerSpan);
var cookiePos = document.cookie.indexOf("hidetoc=");
if (cookiePos > -1 && document.cookie.charAt(cookiePos + 8) == 1)
toggleToc();
}
}
function changeText(el, newText) {
// Safari work around
if (el.innerText)
el.innerText = newText;
else if (el.firstChild && el.firstChild.nodeValue)
el.firstChild.nodeValue = newText;
}
function toggleToc() {
var toc = document.getElementById('toc').getElementsByTagName('ul')[0];
var toggleLink = document.getElementById('togglelink')
if(toc && toggleLink && toc.style.display == 'none') {
changeText(toggleLink, tocHideText);
toc.style.display = 'block';
document.cookie = "hidetoc=0";
} else {
changeText(toggleLink, tocShowText);
toc.style.display = 'none';
document.cookie = "hidetoc=1";
}
}
// this function generates the actual toolbar buttons with localized text
// we use it to avoid creating the toolbar where javascript is not enabled
function addButton(imageFile, speedTip, tagOpen, tagClose, sampleText) {
// Don't generate buttons for browsers which don't fully
// support it.
if(!document.selection && !is_gecko) {
return false;
}
imageFile=escapeQuotesHTML(imageFile);
speedTip=escapeQuotesHTML(speedTip);
tagOpen=escapeQuotes(tagOpen);
tagClose=escapeQuotes(tagClose);
sampleText=escapeQuotes(sampleText);
var mouseOver="";
document.write("<a href=\"javascript:insertTags");
document.write("('"+tagOpen+"','"+tagClose+"','"+sampleText+"');\">");
document.write("<img width=\"23\" height=\"22\" src=\""+imageFile+"\" border=\"0\" alt=\""+speedTip+"\" title=\""+speedTip+"\""+mouseOver+">");
document.write("</a>");
return;
}
function escapeQuotes(text) {
var re=new RegExp("'","g");
text=text.replace(re,"\\'");
re=new RegExp("\\n","g");
text=text.replace(re,"\\n");
return escapeQuotesHTML(text);
}
function escapeQuotesHTML(text) {
var re=new RegExp('&',"g");
text=text.replace(re,"&");
var re=new RegExp('"',"g");
text=text.replace(re,""");
var re=new RegExp('<',"g");
text=text.replace(re,"<");
var re=new RegExp('>',"g");
text=text.replace(re,">");
return text;
}
// apply tagOpen/tagClose to selection in textarea,
// use sampleText instead of selection if there is none
// copied and adapted from phpBB
function insertTags(tagOpen, tagClose, sampleText) {
var txtarea = document.editform.wpTextbox1;
// IE
if(document.selection && !is_gecko) {
var theSelection = document.selection.createRange().text;
if(!theSelection) { theSelection=sampleText;}
txtarea.focus();
if(theSelection.charAt(theSelection.length - 1) == " "){// exclude ending space char, if any
theSelection = theSelection.substring(0, theSelection.length - 1);
document.selection.createRange().text = tagOpen + theSelection + tagClose + " ";
} else {
document.selection.createRange().text = tagOpen + theSelection + tagClose;
}
// Mozilla
} else if(txtarea.selectionStart || txtarea.selectionStart == '0') {
var replaced = false;
var startPos = txtarea.selectionStart;
var endPos = txtarea.selectionEnd;
if(endPos-startPos) replaced=true;
var scrollTop=txtarea.scrollTop;
var myText = (txtarea.value).substring(startPos, endPos);
if(!myText) { myText=sampleText;}
if(myText.charAt(myText.length - 1) == " "){ // exclude ending space char, if any
subst = tagOpen + myText.substring(0, (myText.length - 1)) + tagClose + " ";
} else {
subst = tagOpen + myText + tagClose;
}
txtarea.value = txtarea.value.substring(0, startPos) + subst +
txtarea.value.substring(endPos, txtarea.value.length);
txtarea.focus();
//set new selection
if(replaced){
var cPos=startPos+(tagOpen.length+myText.length+tagClose.length);
txtarea.selectionStart=cPos;
txtarea.selectionEnd=cPos;
}else{
txtarea.selectionStart=startPos+tagOpen.length;
txtarea.selectionEnd=startPos+tagOpen.length+myText.length;
}
txtarea.scrollTop=scrollTop;
// All other browsers get no toolbar.
// There was previously support for a crippled "help"
// bar, but that caused more problems than it solved.
}
// reposition cursor if possible
if (txtarea.createTextRange) txtarea.caretPos = document.selection.createRange().duplicate();
}
function akeytt() {
if(typeof ta == "undefined" || !ta) return;
pref = 'alt-';
if(is_safari || navigator.userAgent.toLowerCase().indexOf( 'mac' ) + 1
|| navigator.userAgent.toLowerCase().indexOf( 'konqueror' ) + 1 ) pref = 'control-';
if(is_opera) pref = 'shift-esc-';
for(id in ta) {
n = document.getElementById(id);
if(n){
// Are we putting accesskey in it
if(ta[id][0].length > 0) {
// Is this object a object? If not assume it's the next child.
if ( n.nodeName.toLowerCase() == "a" ) {
a = n;
} else {
a = n.childNodes[0];
}
if(a){
a.accessKey = ta[id][0];
ak = ' ['+pref+ta[id][0]+']';
}
} else {
// We don't care what type the object is when assigning tooltip
a = n;
ak = '';
}
if (a) {
a.title = ta[id][1]+ak;
}
}
}
}
function setupRightClickEdit() {
if( document.getElementsByTagName ) {
var divs = document.getElementsByTagName( 'div' );
for( var i = 0; i < divs.length; i++ ) {
var el = divs[i];
if( el.className == 'editsection' ) {
addRightClickEditHandler( el );
}
}
}
}
function addRightClickEditHandler( el ) {
for( var i = 0; i < el.childNodes.length; i++ ) {
var link = el.childNodes[i];
if( link.nodeType == 1 && link.nodeName.toLowerCase() == 'a' ) {
var editHref = link.getAttribute( 'href' );
// find the following a
var next = el.nextSibling;
while( next.nodeType != 1 )
next = next.nextSibling;
// find the following header
next = next.nextSibling;
while( next.nodeType != 1 )
next = next.nextSibling;
if( next && next.nodeType == 1 &&
next.nodeName.match( /^[Hh][1-6]$/ ) ) {
next.oncontextmenu = function() {
document.location = editHref;
return false;
}
}
}
}
}
function fillDestFilename() {
if (!document.getElementById) return;
var path = document.getElementById('wpUploadFile').value;
// Find trailing part
var slash = path.lastIndexOf( '/' );
var backslash = path.lastIndexOf( '\\' );
var fname;
if ( slash == -1 && backslash == -1 ) {
fname = path;
} else if ( slash > backslash ) {
fname = path.substring( slash+1, 10000 );
} else {
fname = path.substring( backslash+1, 10000 );
}
// Capitalise first letter and replace spaces by underscores
fname = fname.charAt(0).toUpperCase().concat(fname.substring(1,10000)).replace( / /g, '_' );
// Output result
var destFile = document.getElementById('wpDestFile');
if (destFile) destFile.value = fname;
}
function considerChangingExpiryFocus() {
if (!document.getElementById) return;
var drop = document.getElementById('wpBlockExpiry');
if (!drop) return;
var field = document.getElementById('wpBlockOther');
if (!field) return;
var opt = drop.value;
if (opt == 'other')
field.style.display = '';
else
field.style.display = 'none';
}
function scrollEditBox() {
var editBoxEl = document.getElementById("wpTextbox1");
var scrollTopEl = document.getElementById("wpScrolltop");
var editFormEl = document.getElementById("editform");
if ( editBoxEl && scrollTopEl ) {
if (scrollTopEl.value) editBoxEl.scrollTop = scrollTopEl.value;
editFormEl.onsubmit = function() {
document.getElementById("wpScrolltop").value = document.getElementById("wpTextbox1").scrollTop;
}
}
}
hookEvent( "load", scrollEditBox );
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My name is Jiyang Hou (or John Hou). I was born in HeiLongJiang province in north east of China. I got all my educations in China. My university major is Geophysics, but my main professional role is software developer. My biggest accomplishment so far is quit smoking about 5 years ago after almost 20 years smoking history. I am still interested on programming beside making living with it like many other developers. I immigrated to Canada in 2003 and became a permanent resident till now. I live in Calgary, Alberta, Canada. You can reach me by jyhou69@gmail.com regarding to any questions, comments, advice, etc.