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/*
* Readable - makes webpages more readable
*
* See COPYING file for copyright, license and warranty details.
*/
if(window.content.document.readable_original === undefined) window.content.document.readable_original = false;
function readable()
{
/* count the number of <p> tags that are direct children of parenttag */
function count_p(parenttag)
{
var n = 0;
var c = parenttag.childNodes;
for (var i = 0; i < c.length; i++) {
if (c[i].tagName == "p" || c[i].tagName == "P")
n++;
}
return n;
}
var doc;
if(document.body === undefined)
doc = window.content.document;
else
doc = document;
/* if readable_original is set, then the readable version is currently active,
* so switch to the readable_original html */
if (doc.readable_original) {
doc.body.innerHTML = doc.readable_original;
for (var i = 0; i < doc.styleSheets.length; i++)
doc.styleSheets[i].disabled = false;
doc.readable_original = false
return 0;
}
doc.readable_original = doc.body.innerHTML;
var biggest_num = 0;
var biggest_tag;
/* search for tag with most direct children <p> tags */
var t = doc.getElementsByTagName("*");
for (var i = 0; i < t.length; i++) {
var p_num = count_p(t[i]);
if (p_num > biggest_num) {
biggest_num = p_num;
biggest_tag = t[i];
}
}
if (biggest_num == 0) {
alert("Can't find any content");
return 1;
}
/* save and sanitise content of chosen tag */
var fresh = doc.createElement("div");
fresh.innerHTML = biggest_tag.innerHTML;
fresh.innerHTML = fresh.innerHTML.replace(/<\/?font[^>]*>/g, "");
fresh.innerHTML = fresh.innerHTML.replace(/style="[^"]*"/g, "");
fresh.innerHTML = fresh.innerHTML.replace(/<\/?a[^>]*>/g, "");
for (var i = 0; i < doc.styleSheets.length; i++)
doc.styleSheets[i].disabled = true;
doc.body.innerHTML =
"<div style=\"width: 38em; margin: auto; text-align: justify;\">" +
"<h1 style=\"text-align: center\">" + doc.title + "</h1>" +
fresh.innerHTML + "</div>";
return 0;
}
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