mambax7/smartfaq

//\/////
//\  overLIB Crossframe Support Plugin
//\  This file requires overLIB 4.00 or later.
//\
//\  overLIB 4.05 - You may not remove or change this notice.
//\  Copyright Erik Bosrup 1998-2004. All rights reserved.
//\  Contributors are listed on the homepage.
//\  See http://www.bosrup.com/web/overlib/ for details.
//   $Revision: 1.2 $                $Date: 2005/08/15 16:52:04 $
//\/////


////////
// PRE-INIT
// Ignore these lines, configuration is below.
////////
if (typeof olInfo == 'undefined' || olInfo.simpleversion < 400) alert('overLIB 4.00 or later is required for the Cross Frame Support Plugin.');
registerCommands('frame');


////////
//  PLUGIN FUNCTIONS
///////

// Parses FRAME command
function parseFrameExtras(pf, i, ar) {
    var k = i, v;

    if (k < ar.length) {
        if (ar[k] == FRAME) {
            v = ar[++k];
            if (pf == 'ol_' && compatibleframe(v)) ol_frame = v; else opt_FRAME(v);
            return k;
        }
    }

    return -1;
}

////////
// SUPPORT FUNCTIONS
////////

// Defines which frame we should point to.
function opt_FRAME(frm) {
    o3_frame = compatibleFrame(frm) ? frm : ol_frame;

    if (olNs4) {
        over = o3_frame.document.layers['overDiv'];
    } else if (document.all) {
        over = o3_frame.document.all['overDiv'];
    } else if (document.getElementById) {
        over = o3_frame.document.getElementById("overDiv");
    }

    return 0;
}

// Makes sure target frame has overLIB
function compatibleFrame(frameid) {
    if (olNs4 && typeof frameid.document.overDiv == 'undefined') {
        return false;
    } else if (document.all && typeof frameid.document.all["overDiv"] == 'undefined') {
        return false;
    } else if (document.getElementById && frameid.document.getElementById('overDiv') == null) {
        return false;
    }

    return true;
}

// Get frame depth of nested frames
function frmDepth(thisFrame, ofrm) {
    var retVal = '';

    for (var i = 0; i < thisFrame.length; i++) {
        if (thisFrame[i].length > 0) {
            retVal = frmDepth(thisFrame[i], ofrm);
            if (retVal == '') continue;
        } else if (thisFrame[i] != ofrm) continue;
        retVal = '[' + i + ']' + retVal;
        break;
    }

    return retVal;
}

// Gets frame reference value relative to top frame
function getFrmRef(srcFrm, tgetFrm) {
    var rtnVal = ''

    if (tgetFrm != srcFrm) {
        var tFrm = frmDepth(top.frames, tgetFrm)
        var sFrm = frmDepth(top.frames, srcFrm)
        if (sFrm.length == tFrm.length) {
            l = tFrm.lastIndexOf('[')

            if (l) {
                while (sFrm.substring(0, l) != tFrm.substring(0, l))
                    l = tFrm.lastIndexOf('[', l - 1)
                tFrm = tFrm.substr(l)
                sFrm = sFrm.substr(l)
            }
        }

        var cnt = 0, p = '', str = tFrm
        while ((k = str.lastIndexOf('[')) != -1) {
            cnt++
            str = str.substring(0, k)
        }

        for (var i = 0; i < cnt; i++) p = p + 'parent.'
        rtnVal = p + 'frames' + sFrm + '.'
    }

    return rtnVal
}

function chkForFrmRef() {
    if (o3_frame != ol_frame) fnRef = getFrmRef(ol_frame, o3_frame)
    return true;
}

////////
// PLUGIN REGISTRATIONS
////////
registerCmdLineFunction(parseFrameExtras);
registerPostParseFunction(chkForFrmRef);