My user script to keep only news content in creaders.net and wenxuecity.com

// ==UserScript==
// @name Keep Only Interested Content
// @namespace http://leochen.net
// @description A script to remove all the un-necessary elements and display plain interested content only (version 0.3)
// @include http://*.wenxuecity.com/*
// @include http://*.creaders.net/*
// @include http://*.bbsland.com/*
// ==/UserScript==

var body = document.body;
var theContent = new Array();
var numContent = 0;

/* for wenxuecity.com */
if (/wenxuecity/.test(document.URL)) {
if (/www/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[3].childNodes[1].childNodes[10].childNodes[1].childNodes[0].childNodes[1].childNodes[0].childNodes[5].childNodes[2].childNodes[1].childNodes[2].childNodes[1].childNodes[0];
} else if (/news/.test(document.URL)) {
var content = document.body.childNodes[3].childNodes[1].childNodes[10].childNodes[1].childNodes[0].childNodes[1].childNodes[0].childNodes[5].childNodes[2].childNodes[1].childNodes[0].childNodes[1].childNodes[6];
theContent[numContent++] = content.childNodes[1].childNodes[2].childNodes[1].childNodes[1].childNodes[1].childNodes[0];
}
}

/* for creaders.net */
if (/creaders.net/.test(document.URL)) {
if (/headline/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[9].childNodes[1].childNodes[0].childNodes[3].childNodes[3];
} else if (/digest/.test(document.URL)) {
if (/pool/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[5].childNodes[13];
theContent[numContent++] = document.body.childNodes[5].childNodes[19].childNodes[1].childNodes[2].childNodes[3];
} else {
theContent[numContent++] = document.body.childNodes[5].childNodes[0].childNodes[8].childNodes[7];
}
} else if (/dailynews/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[5].childNodes[3].childNodes[1].childNodes[0].childNodes[3].childNodes[1];
} else {
theContent[numContent++] = document.body.childNodes[1].childNodes[13];
theContent[numContent++] = document.body.childNodes[1].childNodes[19];
theContent[numContent++] = document.body.childNodes[1].childNodes[23];
theContent[numContent++] = document.body.childNodes[1].childNodes[27];
theContent[numContent++] = document.body.childNodes[1].childNodes[31];
}
}

if (/bbsland.com/.test(document.URL)) {
if (/bcchinese/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
if (/messages/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[16];
} else {
theContent[numContent++] = document.body.childNodes[1].childNodes[13];
theContent[numContent++] = document.body.childNodes[1].childNodes[15];
theContent[numContent++] = document.body.childNodes[1].childNodes[25];
theContent[numContent++] = document.body.childNodes[1].childNodes[36];
}
}
if (/life/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
if (/messages/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[14].childNodes[7];
} else {
theContent[numContent++] = document.body.childNodes[1].childNodes[13];
theContent[numContent++] = document.body.childNodes[1].childNodes[15];
theContent[numContent++] = document.body.childNodes[1].childNodes[20];
theContent[numContent++] = document.body.childNodes[1].childNodes[29];
}
}
if (/military/.test(document.URL)) {
if (/messages/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[16];
theContent[numContent++] = document.body.childNodes[1].childNodes[19];
} else {
theContent[numContent++] = document.body.childNodes[1].childNodes[16];
theContent[numContent++] = document.body.childNodes[1].childNodes[18];
theContent[numContent++] = document.body.childNodes[1].childNodes[22];
theContent[numContent++] = document.body.childNodes[1].childNodes[29];
theContent[numContent++] = document.body.childNodes[1].childNodes[33];
}
}
if (/general/.test(document.URL)) {
if (/messages/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[1].childNodes[19];
}
}
if (/politics/.test(document.URL)) {
if (/messages/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[1].childNodes[19];
} else {
theContent[numContent++] = document.body.childNodes[11];
}
}
if (/sports/.test(document.URL)) {
if (/messages/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[1].childNodes[14];
} else {
theContent[numContent++] = document.body.childNodes[0].childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[0].childNodes[1].childNodes[13];
theContent[numContent++] = document.body.childNodes[0].childNodes[1].childNodes[15];
theContent[numContent++] = document.body.childNodes[0].childNodes[1].childNodes[22];
theContent[numContent++] = document.body.childNodes[0].childNodes[1].childNodes[33];
}
}
if (/child/.test(document.URL)) {
if (/messages/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[1].childNodes[14];
} else {
theContent[numContent++] = document.body.childNodes[1].childNodes[5];
theContent[numContent++] = document.body.childNodes[1].childNodes[6];
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[1].childNodes[21];
}
}
if (/tea/.test(document.URL)) {
if (/messages/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[1].childNodes[16];
} else {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[1].childNodes[13];
theContent[numContent++] = document.body.childNodes[1].childNodes[15];
theContent[numContent++] = document.body.childNodes[1].childNodes[20];
theContent[numContent++] = document.body.childNodes[1].childNodes[31];
}
}
if (/joke/.test(document.URL)) {
if (/messages/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
} else {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[1].childNodes[13];
theContent[numContent++] = document.body.childNodes[1].childNodes[15];
theContent[numContent++] = document.body.childNodes[1].childNodes[20];
theContent[numContent++] = document.body.childNodes[1].childNodes[29];
}
}
if (/iwish/.test(document.URL)) {
if (/messages/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[1].childNodes[15];
} else {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[1].childNodes[13];
theContent[numContent++] = document.body.childNodes[1].childNodes[15];
theContent[numContent++] = document.body.childNodes[1].childNodes[22];
theContent[numContent++] = document.body.childNodes[1].childNodes[33];
}
}
if (/education/.test(document.URL)) {
if (/messages/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[5];
theContent[numContent++] = document.body.childNodes[1].childNodes[6].childNodes[8];
} else {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[1].childNodes[13];
theContent[numContent++] = document.body.childNodes[1].childNodes[17];
theContent[numContent++] = document.body.childNodes[1].childNodes[27];
theContent[numContent++] = document.body.childNodes[1].childNodes[41];
}
}
if (/newland/.test(document.URL)) {
if (/messages/.test(document.URL)) {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[1].childNodes[15];
} else {
theContent[numContent++] = document.body.childNodes[1].childNodes[11];
theContent[numContent++] = document.body.childNodes[1].childNodes[22];
theContent[numContent++] = document.body.childNodes[1].childNodes[33];
theContent[numContent++] = document.body.childNodes[1].childNodes[37];
}
}


}

var len = body.childNodes.length;

/* remove all content */
for (i=0; i< len; i++) {
body.removeChild(body.childNodes[0]);
}

/* shown only interested elements */
for (i=0; i< numContent; i++) {
body.appendChild(theContent[i]);
}