injected stylesheet remove
/* Answer to: "injected stylesheet remove" */
function loadCSS(file) {
var link = document.createElement("link");
link.href = chrome.extension.getURL(file + '.css');
link.id = file;
link.type = "text/css";
link.rel = "stylesheet";
document.getElementsByTagName("head")[0].appendChild(link);
}
function unloadCSS(file) {
var cssNode = document.getElementById(file);
cssNode && cssNode.parentNode.removeChild(cssNode);
}