Dynamicdeezign, documentation of html and css
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  • overflow

    This property specifies whether content of a block-level element is clipped when it overflows the element's box. It affects the clipping of all of the element's content except any descendant elements (and their respective content and descendants) whose containing block is the viewport or an ancestor of the element.
    Property
    Value: visible | hidden | scroll | auto | inherit
  • visible : This value indicates that content is not clipped, i.e., it may be rendered outside the block box.
  • hidden : This value indicates that the content is clipped and that no scrolling user interface should be provided to view the content outside the clipping region.
  • scroll : This value indicates that the content is clipped and that if the user agent uses a scrolling mechanism that is visible on the screen (such as a scroll bar or a panner), that mechanism should be displayed for a box whether or not any of its content is clipped. This avoids any problem with scrollbars appearing and disappearing in a dynamic environment. When this value is specified and the target medium is 'print', overflowing content may be printed.
  • auto : The behavior of the 'auto' value is user agent-dependent, but should cause a scrolling mechanism to be provided for overflowing boxes.
  • Initial: visible
    Applies to: block-level and replaced elements, table cells, inline blocks
    Inherited: no
    Percentages: N/A
    Media: visual
    Computed value: as specified

    Examples
    <div style=" width:100px; height:100px; overflow:visible; border:thin solid green"> <img src="../images/logo.gif" border="0"> </div> =>
    <div style=" width:100px; height:100px; overflow:hidden; border:thin solid green"> <img src="../images/logo.gif" border="0"> </div> =>
    <div style=" width:100px; height:100px; overflow:scroll; border:thin solid green"> <img src="../images/logo.gif" border="0"> </div> =>
    <div style=" width:100px; height:100px; overflow:auto; border:thin solid green"> <img src="../images/logo.gif" border="0"> </div> =>

  • clip

    The 'clip' property applies only to absolutely positioned elements.
    Property
    Value: auto | shape | inherit
  • auto : The element does not clip.
  • shape : In CSS 2.1, the only valid value is: rect(, , , ) where and specify offsets from the top border edge of the box, and , and specify offsets from the left border edge of the box in left-to-right text and from the right border edge of the box in right-to-left text. Authors should separate offset values with commas. User agents must support separation with commas, but may also support separation without commas, because a previous version of this specification was ambiguous in this respect.
  • Initial: auto
    Applies to: absolutely positioned elements
    Inherited: no
    Percentages: N/A
    Media: visual
    Computed value: For rectangle values, a rectangle consisting of four computed lengths; otherwise, as specified

    Examples
    <div style="position:absolute; top:1410px; left:630px; clip:rect(0px 200px 100px 0px);">
    <img src="/images/logo.gif" border="0">
    </div>
    =>
    <div style="position:absolute; top:1450px; left:630px; clip:rect(0px 50px 50px 0px);">
    <img src="/images/logo.gif" border="0">
    </div>
    =>

  • visibility

    The 'visibility' property specifies whether the boxes generated by an element are rendered. Invisible boxes still affect layout (set the 'display' property to 'none' to suppress box generation altogether).
    Property
    Value: visible | hidden | collapse | inherit
    Initial: visible
    Applies to: all elements
    Inherited: yes
    Percentages: N/A
    Media: visual
    Computed value: as specified

    Examples
    <script language="JavaScript" type="text/javascript">
    <!--
    function show() {
    if(document.getElementById)
    document.getElementById("the_text").style.visibility = "visible";
    }
    function hide() {
    if(document.getElementById)
    document.getElementById("the_text").style.visibility = "hidden";
    }
    //-->
    </script>
    <a href="javascript:show()">show text below</a> <a href="javascript:hide()">hide text below</a>
    <div id="the_text" style="visibility:hidden"><b>Text shown</b></div>
    => show text below     hide text below





    For complete reference see CSS Style reference at W3C
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