Stuff

//On thread page chkSubscribed = document.evaluate( "//td[@class='s1']/.." ,document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null ).singleNodeValue.textContent.match('SUBSCRIBED');if(chkSubscribed){  GM_setValue('subscribed', 'true');}//On reply pageif (GM_getValue('subscribed') == 'true' ) {  markReadBox = document.getElementById("modesu");  markReadBox.click();      GM_setValue('subscribed', 'false');  }prevbutton = document.getElementById("post");prevbutton.click();