Removes keyboard focus from this element.

  Simulate a mouse-click.

  Simulate a mouse-click. For INPUT elements whose
type attribute has one of the following values: "Button",
"Checkbox", "Radio", "Reset", or "Submit".

Gives keyboard focus to this element.

  A comma-separated list of content types that a server processing this form will handle correctly.

  A comma-separated list of content types that a server processing this
form will handle correctly. See the accept attribute definition in
HTML 4.0.

  A single character access key to give access to the form control.

  A single character access key to give access to the form control. See
the accesskey attribute definition in HTML 4.0.

  Aligns this object (vertically or horizontally) with respect to its surrounding text.

  Aligns this object (vertically or horizontally) with respect to its
surrounding text. See the align attribute definition in HTML 4.0.
This attribute is deprecated in HTML 4.0.

  Alternate text for user agents not rendering the normal content of this element.

  Alternate text for user agents not rendering the normal content of
this element. See the alt attribute definition in HTML 4.0.

  When the type attribute of the element has the value "Radio" or "Checkbox", this represents the current state of the form control, in an interactive user agent.

  When the type attribute of the element has the value
"Radio" or "Checkbox", this represents the current state of the form
control, in an interactive user agent. Changes to this attribute
change the state of the form control, but do not change the value of
the HTML value attribute of the element.

  When type has the value "Radio" or "Checkbox", this represents the HTML checked attribute of the element.

  When type has the value "Radio" or "Checkbox", this
represents the HTML checked attribute of the element. The value of
this attribute does not change if the state of the corresponding form
control, in an interactive user agent, changes. Changes to this
attribute, however, resets the state of the form control. See the
checked attribute definition in HTML 4.0.

  When the type attribute of the element has the value "Text", "File" or "Password", this represents the HTML value attribute of the element.

  When the type attribute of the element has the value
"Text", "File" or "Password", this represents the HTML value attribute
of the element. The value of this attribute does not change if the
contents of the corresponding form control, in an interactive user
agent, changes. Changing this attribute, however, resets the contents
of the form control. See the value attribute definition in HTML 4.0.

  The control is unavailable in this context.

  The control is unavailable in this context. See the disabled
attribute definition in HTML 4.0.

  Returns the FORM element containing this control.

  Returns the FORM element containing this control. Returns
null if this control is not within the context of a form.

  Maximum number of characters for text fields, when type has the value "Text" or "Password".

  Maximum number of characters for text fields, when type
has the value "Text" or "Password". See the maxlength attribute
definition in HTML 4.0.

  Form control or object name when submitted with a form.

  Form control or object name when submitted with a form. See the name
attribute definition in HTML 4.0.

  This control is read-only.

  This control is read-only. Relevant only when type has
the value "Text" or "Password". See the readonly attribute definition
in HTML 4.0.

  Size information.

  Size information. The precise meaning is specific to each type of
field. See the size attribute definition in HTML 4.0.

  When the type attribute has the value "Image", this attribute specifies the location of the image to be used to decorate the graphical submit button.

  When the type attribute has the value "Image", this
attribute specifies the location of the image to be used to decorate
the graphical submit button. See the src attribute definition in HTML
4.0.

  Index that represents the element's position in the tabbing order.

  Index that represents the element's position in the tabbing order. See
the tabindex attribute definition in HTML 4.0.

  The type of control created.

  The type of control created. See the type attribute definition in
HTML 4.0.

  Use client-side image map.

  Use client-side image map. See the usemap attribute definition in
HTML 4.0.

  When the type attribute of the element has the value "Text", "File" or "Password", this represents the current contents of the corresponding form control, in an interactive user agent.

  When the type attribute of the element has the value
"Text", "File" or "Password", this represents the current contents of
the corresponding form control, in an interactive user agent. Changing
this attribute changes the contents of the form control, but does not
change the value of the HTML value attribute of the element. When the
type attribute of the element has the value "Button",
"Hidden", "Submit", "Reset", "Image", "Checkbox" or "Radio", this
represents the HTML value attribute of the element. See the value
attribute definition in HTML 4.0.

  Select the contents of the text area.

  Select the contents of the text area. For INPUT elements
whose type attribute has one of the following values:
"Text", "File", or "Password".