OmniFocus Generalized Bookmarklet

gistfile1.js

javascript:(function(){
    var w=window,d=document,selectedTxt=w.getSelection?w.getSelection():(d.getSelection)?d.getSelection():(d.selection?d.selection.createRange().text:0),pageUri=w.location.href,isGMail=w.location.host.match(/mail\.google\.com/),subject=d.title,source;
    if(isGMail){
        var msgFrm=d.getElementById("canvas_frame"),subjectSpans;
        if(msgFrm){
            subjectSpans=msgFrm.contentDocument.getElementsByClassName("hP");
            if(subjectSpans)subject=subjectSpans[0].innerText;
        };
        if(!subjectSpans){
           subject=d.title.substring(d.title.indexOf("-")+1,d.title.lastIndexOf("-")).replace(/^%20+/,"").replace(/%20+$/,"")
        };
        source="From:%20email%20subject:("+subject+")\n";
    }
    else {
        source="From:%20"
    }
    if(selectedTxt)selectedTxt+="\n";
    window.location='omnifocus:///add?note='+encodeURIComponent(selectedTxt+source+pageUri)+'&name='+encodeURIComponent(subject);
})();