# <netui:imageAnchor> Tag

Generates a hyperlink with a clickable image.

## Syntax

<netui:imageAnchor
[accessKey="string_accessKey"]
[action="string_action"]
[align="string_align"]
[alt="string_alt"]
[border="integer_pixelBorder"]
[formSubmit="boolean_formSubmit"]
[forward="string_forward"]
[height="integer_height"]
[href="string_href"]
[hspace="integer_hspace"]
[id="string_id"]
[ismap="string_isMap"]
[linkName="string_linkName"]
[location="string_location"]
[lowsrc="string_lowsrc"]
[onBlur="string_onBlur"]
[onClick="string_onClick"]
[onDblClick="string_onDblClick"]
[onFocus="string_onFocus"]
[onKeyDown="string_onKeyDown"]
[onKeyPress="string_onKeyPress"]
[onKeyUp="string_onKeyUp"]
[onMouseDown="string_onMouseDown"]
[onMouseMove="string_onMouseMove"]
[onMouseOut="string_onMouseOut"]
[onMouseOver="string_onMouseOver"]
[onMouseUp="string_onMouseUp"]
[page="string_page"]
[rolloverImage="string_rolloverImage"]
[src="string_src"]
[style="string_Style"]
[styleClass="string_Class"]
[tabindex="string_tabIndex"]
[tagId="string_tagId"]
[target="string_action"]
[usemap="string_useMap"]
[vspace="string_vspace"]
[width="integer_pixelWidth"] />

## Description

Generates a hyperlink with a clickable image. Provides support for image rollovers.

The <netui:imageAnchor> tag must have one of five attributes to correctly create the hyperlink:

> - `action` - an action method invoked by clicking the hyperlink
> - `forward` - a forward to redirect to
> - `href` - an URL to go to
> - `linkName` - an internal place in the page to move to
> - `page` - the module-relative page URL to which this hyperlink will be rendered

JavaScript

If an <netui:imageAnchor> sets the `formSubmit` attribute to `true` and no `onClick` attribute is set, the following JavaScript function will be written into the page. The JavaScript function will be referenced by the `onclick` attribute of the generated image anchor, and will cause the parent form to submit:

        function submit[formname][formAction]Form() {
          for(var i=0; i<document.forms.length; i++) {
            if (document.forms[i].id == "[formAction]") {
              document.forms[i].method = "POST";
              document.forms[i].action = "[formAction]";
              document.forms[i].submit();
            }
          }
        }

It is possible to write a custom `onClick` JavaScript event handler that would do additional work, for example form validation, and still submit the form correctly. To accomplish this, reference a JavaScript function in the `onClick` attribute:

        <netui:imageAnchor formSubmit="true" onClick="SubmitFromAnchor();return false;">
            View Results
        </netui:imageAnchor>

And add the referenced JavaScript function to the page:

        function SubmitFromAnchor()
        {
            // implement custom logic here

            for(var i=0; i<document.forms.length; i++)
            {
                // submit to the action /aWebapp/formPost.do
                if (document.forms[i].action == "/aWebapp/formPost.do")
                {
                    document.forms[i].method="POST";
                    document.forms[i].action="/aWebapp/formPost.do";
                    document.forms[i].submit();
                }
            }
        }

This will cause the JavaScript function to be executed before posting the form.

## Attributes

accessKey | The keyboard navigation key for the element. The following values are not recommended because they are often used by browsers: `A, C, E, F, G, H, V, left arrow, and right arrow`
Required | Supports runtime expression evaluation | Data bindable
No | No | No
action | The action method to invoke. The action method must be in the Controller file of the Page Flow directory.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
align | The alignment of the image.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
alt | The alternative text of the image
Required | Supports runtime expression evaluation | Data bindable
No | No | Read Only
border | The border size around the image
Required | Supports runtime expression evaluation | Data bindable
No | No | No
formSubmit | Boolean. If `formSubmit` is set to true, and the <netui:anchor> tag is within a <netui:form> tag, then the form data will be submitted to the method named in the <netui:form> tag's `action` attribute.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
forward | The logical forward name from which to retrieve the hyperlink URI.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
height | The image height
Required | Supports runtime expression evaluation | Data bindable
No | No | Read Only
href | The URL to go to.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
hspace | The horizontal spacing around the image.
Required | Supports runtime expression evaluation | Data bindable
No | No | Read Only
id | The id attribute is deprecated, use the `tagId` attribute instead. The id attribute of the rendered HTML tag.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
ismap | The server-side map declaration.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
linkName | An internal place on the page to go to.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
location | Location within the URI to visit.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
lowsrc | The low resolution image source URI
Required | Supports runtime expression evaluation | Data bindable
No | No | No
onBlur | The onBlur JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onClick | The onClick JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onDblClick | The onDblClick JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onFocus | The onFocus JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onKeyDown | The onKeyDown JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onKeyPress | The onKeyPress JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onKeyUp | The onKeyUp JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onMouseDown | The onMouseDown JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onMouseMove | The onMouseMove JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onMouseOut | The onMouseOut JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onMouseOver | The onMouseOver JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
onMouseUp | The onMouseUp JavaScript event.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
page | The page attribute has been deprecated. The module-relative path of the image to be displayed by this rendered tag.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
rolloverImage | The URI of the rollover image.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
src | The image source URI
Required | Supports runtime expression evaluation | Data bindable
No | Yes | Read Only
style | The style of the rendered HTML tag.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
styleClass | The class of the rendered HTML tag.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
tabindex | The tabIndex of the rendered HTML tag. This attribute determines the position of the rendered HTML tag in the sequence of tags that the user may advance through by pressing the TAB key.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
tagId | String value. Sets the `id` (or `name`) attribute of the rendered HTML tag. Note that the real id attribute rendered in the browser may be changed by the application container (for example, Portal containers may change the rendered id value to ensure the uniqueness of id's on the page). In this case, the real id rendered in the browser may be looked up through the JavaScript function getNetuiTagName( tagId, tag ). For example, assume that some tag's `tagId` attribute is set to `foo`.
        <netui:textBox tagId="foo" />
Then the following JavaScript function will return the real id attribute rendered in the browser:
        getNetuiTagName( "foo", this )
To get a <netui:form> element and all of its children elements in JavaScript, use the same JavaScript function `getNetuiTagName( tagId, tag )`. For example, assume that there is a <netui:form> whose tagId attribute is set to `bar`.
        <netui:form tagId="bar" >
Then the following JavaScript function will return the <netui:form> element and its children (packaged as an array).
        document[getNetuiTagName( "bar", this )]
To retreive the value entered into a <netui:textBox> within the <netui:form> tag, use the following JavaScript expression.
        document[getNetuiTagName("bar", this)][getNetuiTagName("foo", this)].value
The second parameter ensures that the JavaScript function begins its search within the correct Portlet scope. Pass the JavaScript keyword `this` as the second parameter. For detailed information on using the function `getNetuiTagName( tagId, tag )` see Using JavaScript in Page Flow and Portal Applications.
Required | Supports runtime expression evaluation | Data bindable
No | Yes | No
target | The window target.
Required | Supports runtime expression evaluation | Data bindable
No | No | No
usemap | The client-side image map declaration
Required | Supports runtime expression evaluation | Data bindable
No | No | No
vspace | The vertical spacing around the image.
Required | Supports runtime expression evaluation | Data bindable
No | No | Read Only
width | The image width.
Required | Supports runtime expression evaluation | Data bindable
No | No | Read Only

## Sample

In this sample, an <netui:imageAnchor> shows "top.jpg" at 25 x 25 pixels and navigates to index.jsp when clicked.

        <netui:imageAnchor href="index.jsp" src="top.jpg" height="25" width="25" />

## Code Sample

[BEA_HOME]/weblogic81/samples/workshop/SamplesApp/WebApp/tagSamples/netui/imageAnchor/

## Related Topics

<netui:imageAnchor> Tag Sample