Can you guess what this Javascript code does and why? (I didn't even remove my comments)
I wrote this interesting bit of Javascript for my MOSS portal site out of necessity. If someone figures out why I'm using this, we could discuss the alternatives :-) Todd isn't allowed to guess because he knows !
function PageViewerWPVisibility(show) {
// Open the PageViewerWP if found
if (window != top) {
// If in edit mode, leave alone
var versionLink = window.parent.document.getElementById('pvi1_anchor');
if (versionLink != null) {
return;
}
// Find this iframe
// iframesrc = "/sites/Somesite/Pages/Somepage.aspx"
// windowsrc = "http://hostname/sites/Somesite/Pages/Somepage.aspx"
var iframes = window.parent.document.getElementsByTagName('iframe');
var windowsrc = window.location.href.toLowerCase();
var iframe = null;
for (var i=0; i<iframes.length; i++) {
var iframesrc = iframes[i].src.toLowerCase();
var pos = windowsrc.indexOf(iframesrc);
if (pos == (windowsrc.length - iframesrc.length)) {
iframe = iframes[i];
break;
}
}
if (iframe == null) { return; }
// Example: MSOPageViewerWebPart_WebPartWPQ13
var iframeid = iframe.parentNode.id;
var wpqNumPos = iframeid.indexOf("WebPartWPQ") + 10;
var wpqNum = parseInt(iframeid.substr(wpqNumPos));
var zonecell = window.parent.document.getElementById("MSOZoneCell_WebPartWPQ"+wpqNum);
if (show) {
// Show hidden cell and remove "(Hidden)" text.
zonecell.childNodes[0].style.display = "inline";
var titlenode = window.parent.document.getElementById("WebPartTitleWPQ"+wpqNum);
if (titlenode.innerHTML) {
titlenode.innerHTML = titlenode.innerHTML.replace(/[\s\u202C\u202D]*\(Hidden\)[\s\u202C\u202D]*/gm, "");
titlenode.title = titlenode.title.replace(/\s*\(Hidden\)\s*/g, "");
}
}
else {
// Ensure cell is hidden.
zonecell.style.display = "none";
zonecell.parentNode.style.display = "none";
}
}
}