    .#{$prefix}form-trigger {
        background: theme-background-image('form/trigger');
        width: $form-trigger-width;

        @if $form-trigger-border-width != 0 {
            border-width: $form-trigger-border-width;
            border-color: $form-trigger-border-color;
            border-style: $form-trigger-border-style;
        }
    }

    @if $include-rtl {
        .#{$prefix}rtl.#{$prefix}form-trigger-wrap .#{$prefix}form-trigger {
            background-image: theme-background-image('form/trigger-rtl');
        }
    }

    .#{$prefix}trigger-cell {
        background-color: $form-trigger-background-color;
        width: $form-trigger-width;
    }

    .#{$prefix}form-trigger-over {
        background-position: -$form-trigger-width 0;
        @if $form-trigger-border-width != 0 and $form-trigger-border-color-over != $form-trigger-border-color {
            border-color: $form-trigger-border-color-over;
        }
    }

    .#{$prefix}form-trigger-wrap-focus .#{$prefix}form-trigger {
        background-position: -($form-trigger-width * 3) 0;
        @if $form-trigger-border-width != 0 and $form-trigger-border-color-focus != $form-trigger-border-color {
            border-color: $form-trigger-border-color-focus;
        }
    }

    .#{$prefix}form-trigger-wrap-focus .#{$prefix}form-trigger-over {
        background-position: -($form-trigger-width * 4) 0;
    }

    .#{$prefix}form-trigger-click,
    .#{$prefix}form-trigger-wrap-focus .#{$prefix}form-trigger-click {
        background-position: -($form-trigger-width * 2) 0;
        @if $form-trigger-border-width != 0 and $form-trigger-border-color-pressed != $form-trigger-border-color-over {
            border-color: $form-trigger-border-color-pressed;
        }
    }

    .#{$prefix}form-clear-trigger {
        background-image: theme-background-image('form/clear-trigger');
    }

    @if $include-rtl {
        .#{$prefix}rtl.#{$prefix}form-trigger-wrap .#{$prefix}form-clear-trigger {
            background-image: theme-background-image('form/clear-trigger-rtl');
        }
    }

    .#{$prefix}form-search-trigger {
        background-image: theme-background-image('form/search-trigger');
    }

    @if $include-rtl {
        .#{$prefix}rtl.#{$prefix}form-trigger-wrap .#{$prefix}form-search-trigger {
            background-image: theme-background-image('form/search-trigger-rtl');
        }
    }

    @if $include-ie {
        // in IE6 quirks, the table cell enclosing the trigger field's input element does not shrink to fit,
        // so it is necessary to set the height of the table cell.
        .#{$prefix}quirks .#{prefix}ie6 {
            .#{$prefix}form-trigger-input-cell {
                height: $form-field-height;
            }
            @if $include-ext-toolbar-toolbar {
                .#{$prefix}field-toolbar .#{$prefix}form-trigger-input-cell {
                    height: $form-toolbar-field-height;
                }
            }
        }
    }