top Attribute | top Property

DHTML, HTML, & CSS

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top Property

DHTML Properties

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top Attribute | top Property

Sets or retrieves the position of the object relative to the top of the next positioned object in the document hierarchy.

Syntax

HTML { top: sTop }

Scripting object.style.top [ = sTop ]

HTML	{ top: sTop }
Scripting	object.style.top [ = sTop ]

Possible Values

sTop String that specifies one of the following values:

auto Default position according to the regular HTML layout of the page.

length Floating-point number, followed by an absolute units designator (cm, mm, in, pt, pc, or px) or a relative units designator (em or ex). For more information about the supported length units, see CSS Length Units.

percentage Integer, followed by a %. This value is a percentage of the height of the parent object.

The property is read/write with a default value of auto; the CSS attribute is not inherited.
Expressions can be used in place of the preceding value(s), as of Microsoft® Internet Explorer 5. For more information, see dynamic properties.

Remarks

The top attribute should be used only when the position attribute is set; otherwise, the value of the top attribute is ignored.

Because the value of the top property is a string, you cannot use the property in script to calculate the position of the object in the document; instead, use the pixelTop or the posTop property.

For more information about how to access the dimension and location of objects on the page through the document object model, see measuring element dimension and location.

Example

The following examples use the top attribute and the top property to change the position of the object.

This example uses an inline style to set the position of a DIV object.

Sample Code
<DIV STYLE="position:absolute;top:100px">
. . . </DIV>
This feature requires Internet Explorer 4.0 or later. Click the icon below to install the latest version. Then reload this page to view the sample.

This example uses inline script to change the position of the image set by an inline style. The change occurs during onmouseover and onmouseout events.
<IMG SRC="cone.jpg" STYLE="position:absolute; 
    top:80px;" onmouseover="this.style.top='100px''"    
    onmouseout="this.style.top='80px'" >
This feature requires Internet Explorer 4.0 or later. Click the icon below to install the latest version. Then reload this page to view the sample.

Applies To

[ Object Name ]

Platform Version

Win16:

Win32:

Mac:

Unix:

WinCE:

Version data is listed when the mouse hovers over a link, or the link has focus.

A, ADDRESS, APPLET, B, BIG, BLOCKQUOTE, BUTTON, CENTER, CITE, CODE, currentStyle, custom, DD, DFN, DIR, DIV, DL, DT, EM, EMBED, FIELDSET, FORM, Hn, HR, I, IFRAME, IMG, INPUT type=button, INPUT type=checkbox, INPUT type=file, INPUT type=image, INPUT type=password, INPUT type=radio, INPUT type=reset, INPUT type=submit, INPUT type=text, ISINDEX, KBD, LABEL, LEGEND, LI, LISTING, MARQUEE, MENU, OBJECT, OL, P, PRE, runtimeStyle, S, SAMP, SELECT, SMALL, SPAN, STRIKE, STRONG, style, SUB, SUP, TABLE, TEXTAREA, TT, U, UL, VAR, XMP