/*
tip_balloon.js  v. 1.2

The latest version is available at
http://www.walterzorn.com
or http://www.devira.com
or http://www.walterzorn.de

Initial author: Walter Zorn
Last modified: 13.7.2007

Extension for the tooltip library wz_tooltip.js.
Implements balloon tooltips.
*/

// Here we define new global configuration variable(s) (as members of the
// predefined "config." class).
// From each of these config variables, wz_tooltip.js will automatically derive
// a command which can be passed to Tip() or TagToTip() in order to customize
// tooltips individually. These command names are just the config variable
// name(s) translated to uppercase,
// e.g. from config. Balloon a command BALLOON will automatically be
// created.

//===================  GLOBAL TOOPTIP CONFIGURATION  =========================//
config. Balloon = false                         // true or false - set to true if you want this to be the default behaviour
config. BalloonImgPath = "include/netvietgroup_tip/" // Path to images (border, corners, stem), in quotes. Path must be relative to your HTML file.
// Sizes of balloon images
config. BalloonEdgeSize = 6                     // Integer - sidelength of quadratic corner images
config. BalloonStemWidth = 15           // Integer
config. BalloonStemHeight = 19          // Integer
//=======  END OF TOOLTIP CONFIG, DO NOT CHANGE ANYTHING BELOW  ==============//


// Create a new tt_Extension object (make sure that the name of that object,
// here balloon, is unique amongst the extensions available for wz_tooltips.js):
var balloon = new tt_Extension();

// Implement extension eventhandlers on which our extension should react

balloon.OnLoadConfig = function()
{
        if(tt_aV[BALLOON])
        {
                // Turn off native style properties which are not appropriate
                balloon.padding = Math.max(tt_aV[PADDING] - tt_aV[BALLOONEDGESIZE], 0);
                balloon.width = tt_aV[WIDTH];
                //if(tt_bBoxOld)
                //      balloon.width += (balloon.padding << 1);
                tt_aV[BORDERWIDTH] = 0;
                tt_aV[WIDTH] = 0;
                tt_aV[PADDING] = 0;
                tt_aV[BGCOLOR] = "";
                tt_aV[BGIMG] = "";
                tt_aV[SHADOW] = false;
                // Append slash to img path if missing
                if(tt_aV[BALLOONIMGPATH].charAt(tt_aV[BALLOONIMGPATH].length - 1) != '/')
                        tt_aV[BALLOONIMGPATH] += "/";
                return true;
        }
        return false;
};
balloon.OnCreateContentString = function()
{
        if(!tt_aV[BALLOON])
                return false;

        var aImg, sImgZ, sCssCrn, sCssImg;

        // Cache balloon images in advance:
        // Either use the pre-cached default images...
        if(tt_aV[BALLOONIMGPATH] == config.BalloonImgPath)
                aImg = balloon.aDefImg;
        // ...or load images from different directory
        else
                aImg = Balloon_CacheImgs(tt_aV[BALLOONIMGPATH]);
        sCssCrn = ' style="position:relative;width:' + tt_aV[BALLOONEDGESIZE] + 'px;padding:0px;margin:0px;overflow:hidden;line-height:0px;"';
        sCssImg = 'padding:0px;margin:0px;border:0px;';
        sImgZ = '" style="' + sCssImg + '" />';

        tt_sContent = '<table border="0" cellpadding="0" cellspacing="0" style="width:auto;padding:0px;margin:0px;left:0px;top:0px;"><tr>'
                                // Left-top corner
                                + '<td' + sCssCrn + ' valign="bottom">'
                                + '<img src="' + aImg[1].src + '" width="' + tt_aV[BALLOONEDGESIZE] + '" height="' + tt_aV[BALLOONEDGESIZE] + sImgZ
                                + '</td>'
                                // Top border
                                + '<td valign="bottom" style="position:relative;padding:0px;margin:0px;overflow:hidden;">'
                                + '<img id="bALlOOnT" style="position:relative;top:1px;z-index:1;display:none;' + sCssImg + '" src="' + aImg[9].src + '" width="' + tt_aV[BALLOONSTEMWIDTH] + '" height="' + tt_aV[BALLOONSTEMHEIGHT] + '" />'
                                + '<div style="position:relative;z-index:0;padding:0px;margin:0px;overflow:hidden;width:auto;height:' + tt_aV[BALLOONEDGESIZE] + 'px;background-image:url(' + aImg[2].src + ');">'
                                + '</div>'
                                + '</td>'
                                // Right-top corner
                                + '<td' + sCssCrn + ' valign="bottom">'
                                + '<img src="' + aImg[3].src + '" width="' + tt_aV[BALLOONEDGESIZE] + '" height="' + tt_aV[BALLOONEDGESIZE] + sImgZ
                                + '</td>'
                                + '</tr><tr>'
                                // Left border
                                + '<td style="position:relative;padding:0px;margin:0px;width:' + tt_aV[BALLOONEDGESIZE] + 'px;overflow:hidden;background-image:url(' + aImg[8].src + ');">'
                                // Redundant image for bugous old Geckos that won't auto-expand TD height to 100%
                                + '<img width="' + tt_aV[BALLOONEDGESIZE] + '" height="100%" src="' + aImg[8].src + sImgZ
                                + '</td>'
                                // Content
                                + '<td style="position:relative;line-height:normal;'
                                + ';background-image:url(' + aImg[0].src + ')'
                                + ';color:' + tt_aV[FONTCOLOR]
                                + ';font-family:' + tt_aV[FONTFACE]
                                + ';font-size:' + tt_aV[FONTSIZE]
                                + ';font-weight:' + tt_aV[FONTWEIGHT]
                                + ';text-align:' + tt_aV[TEXTALIGN]
                                + ';padding:' + balloon.padding
                                + ';width:' + (balloon.width ? (balloon.width + 'px') : 'auto')
                                + ';">' + tt_sContent + '</td>'
                                // Right border
                                + '<td style="position:relative;padding:0px;margin:0px;width:' + tt_aV[BALLOONEDGESIZE] + 'px;overflow:hidden;background-image:url(' + aImg[4].src + ');">'
                                // Image redundancy for bugous old Geckos that won't auto-expand TD height to 100%
                                + '<img width="' + tt_aV[BALLOONEDGESIZE] + '" height="100%" src="' + aImg[4].src + sImgZ
                                + '</td>'
                                + '</tr><tr>'
                                // Left-bottom corner
                                + '<td valign="top"' + sCssCrn + '>'
                                + '<img src="' + aImg[7].src + '" width="' + tt_aV[BALLOONEDGESIZE] + '" height="' + tt_aV[BALLOONEDGESIZE] + sImgZ
                                + '</td>'
                                // Bottom border
                                + '<td valign="top" style="position:relative;padding:0px;margin:0px;overflow:hidden;">'
                                + '<div style="position:relative;left:0px;top:0px;padding:0px;margin:0px;overflow:hidden;width:auto;height:' + tt_aV[BALLOONEDGESIZE] + 'px;background-image:url(' + aImg[6].src + ');"></div>'
                                + '<img id="bALlOOnB" style="position:relative;top:-1px;left:2px;z-index:1;display:none;' + sCssImg + '" src="' + aImg[10].src + '" width="' + tt_aV[BALLOONSTEMWIDTH] + '" height="' + tt_aV[BALLOONSTEMHEIGHT] + '" />'
                                + '</td>'
                                // Right-bottom corner
                                + '<td valign="top"' + sCssCrn + '>'
                                + '<img src="' + aImg[5].src + '" width="' + tt_aV[BALLOONEDGESIZE] + '" height="' + tt_aV[BALLOONEDGESIZE] + sImgZ
                                + '</td>'
                                + '</tr></table>';
        return true;
};
balloon.OnSubDivsCreated = function()
{
        if(tt_aV[BALLOON])
        {
                balloon.iStem = tt_aV[ABOVE] * 1;
                balloon.stem = [tt_GetElt("bALlOOnT"), tt_GetElt("bALlOOnB")];
                balloon.stem[balloon.iStem].style.display = "inline";
                return true;
        }
        return false;
};
// Display the stem appropriately
balloon.OnMoveAfter = function()
{
        if(tt_aV[BALLOON])
        {
                var iStem = (tt_aV[ABOVE] != tt_bJmpVert) * 1;

                // Tooltip position vertically flipped?
                if(iStem != balloon.iStem)
                {
                        // Display opposite stem
                        balloon.stem[balloon.iStem].style.display = "none";
                        balloon.stem[iStem].style.display = "inline";
                        balloon.iStem = iStem;
                }

                balloon.stem[iStem].style.left = Balloon_CalcStemX() + "px";
                return true;
        }
        return false;
};
function Balloon_CalcStemX()
{
        var x = tt_musX - tt_x;
        return Math.max(Math.min(x, tt_w - tt_aV[BALLOONSTEMWIDTH] - (tt_aV[BALLOONEDGESIZE] << 1) - 2), 2);
}
function Balloon_CacheImgs(sPath)
{
        var asImg = ["background", "lt", "t", "rt", "r", "rb", "b", "lb", "l", "stemt", "stemb"],
        n = asImg.length,
        aImg = new Array(n),
        img;

        while(n)
        {--n;
                img = aImg[n] = new Image();
                img.src = sPath + asImg[n] + ".gif";
        }
        return aImg;
}
// This mechanism pre-caches the default images specified by
// congif.BalloonImgPath, so, whenever a balloon tip using these default images
// is created, no further server connection is necessary.
function Balloon_PreCacheDefImgs()
{
        // Append slash to img path if missing
        if(config.BalloonImgPath.charAt(config.BalloonImgPath.length - 1) != '/')
                config.BalloonImgPath += "/";
        // Preload default images into array
        balloon.aDefImg = Balloon_CacheImgs(config.BalloonImgPath);
}
Balloon_PreCacheDefImgs();