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/*
* Readable - makes webpages more readable
*
* See COPYING file for copyright, license and warranty details.
*/
if(original === undefined) var 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;
}
/* if original is set, then the readable version is currently active,
* so switch to the original html */
if (original) {
document.body.innerHTML = original;
for (var i = 0; i < document.styleSheets.length; i++)
document.styleSheets[i].disabled = false;
original = false
return 0;
}
original = document.body.innerHTML;
var biggest_num = 0;
var biggest_tag;
/* search for tag with most direct children <p> tags */
var t = document.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 = document.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 < document.styleSheets.length; i++)
document.styleSheets[i].disabled = true;
document.body.innerHTML =
"<div style=\"width: 38em; margin: auto; text-align: justify;\">" +
"<h1 style=\"text-align: center\">" + document.title + "</h1>" +
fresh.innerHTML + "</div>";
return 0;
}
readable()
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