Subversion Repositories cpu8080

/*  Your are permitted to reuse this code as long as the following copyright

    notice is not removed:

    This HTML tip handling is copyright 1998 by insideDHTML.com, LLC. More information about this

    code can be found at Inside Dynamic HTML: HTTP://www.insideDHTML.com

*/

// Support for all collection

var allSupport = document.all!=null;

function setupEventObject(e) {

  // Map NS event object to IEs

  if (e==null) return; // IE returns

  window.event = e;

  window.event.fromElement = e.target;

  window.event.toElement = e.target;

  window.event.srcElement = e.target;

  window.event.x = e.x;

  window.event.y = e.y;

  // Route the event to the original element

  // Necessary to make sure _tip is set.

  window.event.srcElement.handleEvent(e);

}

function checkName(src) {

  // Look for tooltip in IE

  while ((src!=null) && (src._tip==null))

    src = src.parentElement;

  return src;

}

function getElement(elName) {

  // Get an element from its ID

  if (allSupport) return document.all[elName];

  else            return document.layers[elName];

}

function writeContents(el, tip) {

  // Replace the contents of the tooltip

  if (allSupport)

    el.innerHTML = tip;

  else {

    // In NS, insert a table to work around

    // stylesheet rendering bug.

    // NS fails to apply style sheets when writing

    // contents into a positioned element.

    el.document.open();

    el.document.write("<TABLE WIDTH=200 BORDER=1 bordercolor=black><TR><TD WIDTH=100% BGCOLOR=yellow>");

    el.document.write(tip);

    el.document.write("</TD></TR></TABLE>");

    el.document.close();

  }

}

function getOffset(el, which) {

  // Function for IE to calculate position

  // of an element.

  var amount = el["offset"+which];

  if (which=="Top") amount+=el.offsetHeight;

  el = el.offsetParent;

  while (el!=null) {

    amount+=el["offset"+which];

    el = el.offsetParent;

  }

  return amount;

}

function setPosition(el) {

  // Set the position of an element

  src = window.event.srcElement

  if (allSupport) {

    el.style.pixelTop = getOffset(src, "Top");

    el.style.pixelLeft = getOffset(src, "Left");

  }

  else {

    el.top = src.y + 20; //window.event.y + 15

    el.left = src.x; //window.event.x

  }

}

function setVisibility(el, bDisplay) {

  // Hide or show to tip

  if (bDisplay) {

    if (allSupport) el.style.visibility = "visible";

    else            el.visibility = "show";

  }

  else {

    if (allSupport) el.style.visibility = "hidden";

    else            el.visibility = "hidden";

  }

}

function displayContents(tip) {

  // Display the tooltip.

  var el = getElement("tipBox");

  writeContents(el, tip);

  setPosition(el);

  setVisibility(el, true);

}

function doMouseOver(e) {

  // Mouse moves over an element

  setupEventObject(e);

  var el, tip;

  if ((el = checkName(window.event.srcElement))!=null) {

    if  (!el._display) {

      displayContents(el._tip);

      el._display = true;

    }

  }

}

function doMouseOut(e) {

  // Mouse leaves an element

  setupEventObject(e);

  el = checkName(window.event.srcElement);

  var el, tip;

  if ((el = checkName(window.event.srcElement))!=null) {

    if (el._display) {

      if ((el.contains==null) || (!el.contains(window.event.toElement))) {

        setVisibility(getElement("tipBox"), false);

        el._display = false;

      }

    }

  }

}

function doLoad() {

  // Do Loading

  if ((window.document.captureEvents==null) && (!allSupport))

    return; // Not IE4 or NS4

  if (window.document.captureEvents!=null)  // NS - capture events

    window.document.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT)

  window.document.onmouseover = doMouseOver;

  window.document.onmouseout = doMouseOut;

}

window.onload = doLoad;