// -------------------------------------------------------------
// Dave Holmes
//
// This javascript file contains all of the code used within the
// system to display and manipulate the pop-up windows which can
// be used to enter and analyse data.......
//
//---------------------------------------------------------------

// This function will display the modal dialog within the application it will also be ensured
// the all of the HTML controls which may interfere with the popup are hidden and the shown afterwards
// a DIV is used in the background to avoid the user access the back panel while the modal dialog is visible
function vstall_dialog_show(url, width, height, mode)
{

    if ( $( 'dialog' ) == null ) {

        body = $( document.body );

        // If it's IE6 then we need to make some CSS changes to get around it's
        // poor support of position: fixed
        if ( window.ie6 ) {

            body.addClass( 'fixed' );

        }

        mask = new Element( 'div', {
                            'styles' : {
                                'background-color' : '#000000',
                                'opacity'          : 0
                            },
                            'id' : 'mask'
                          });



        mask.injectInside( body );

        dialog = new Element( 'div', {
                              'styles' : {
                                  'width'       : width + 'px',
                                  'height'      : height + 'px',
                                  'margin-left' : '-' + ( width / 2 ) + 'px',
                                  'margin-top'  : '-' + ( height / 2 ) + 'px'
                              },
                              'id' : 'dialog'
                             });
        dialog.setHTML( '<iframe src="' + url + '" frameborder="0" />' );
        dialog.injectInside( body );

        fadeIn = new Fx.Style( mask, 'opacity', {duration : 1000 } );
        fadeIn.start( 0.4 );

    }

}

// This function will hide the currently visible pop up window from view this will
// restore the status of the dialog window to show the modal dialog loading command
function vstall_dialog_hide(perform_callback)
{

    body = $( parent.document.body );

    // If it's IE6 then we need to make some CSS changes to get around it's
    // poor support of position: fixed
    if ( window.ie6 ) {

        body.removeClass( 'fixed' );

    }

    mask = $( parent.document.getElementById( 'mask' ) );

    fadeOut = new Fx.Style( mask, 'opacity', { duration : 1000 } );
    fadeOut.start( 0 );

    mask.remove( );

    dialog = $( parent.document.getElementById( 'dialog' ) );
    dialog.remove( );

}