// Copyright © 2000 by Apple Computer, Inc., All Rights Reserved.
//
// You may incorporate this Apple sample code into your own code
// without restriction. This Apple sample code has been provided "AS IS"
// and the responsibility for its operation is yours. You may redistribute
// this code, but you are not permitted to redistribute it as
// "Apple sample code" after having made changes.
//
// ************************
// layer utility routines *
// ************************

function getObject(objectId) {
    // cross-browser function to get an object's style object given its id
    if(document.getElementById && document.getElementById(objectId)) {
	  // W3C DOM
	  return document.getElementById(objectId);
    } else if (document.all && document.all(objectId)) {
	  // MSIE 4 DOM
	  return document.all(objectId);
    } else if (document.layers && document.layers[objectId]) {
	  // NN 4 DOM.. note: this won't find nested layers
	  return document.layers[objectId];
    } else {
	  return false;
    }
} // getObject

function getStyleObject(objectId) {
    // cross-browser function to get an object's style object given its id
    if(document.getElementById && document.getElementById(objectId)) {
	  // W3C DOM
	  return document.getElementById(objectId).style;
    } else if (document.all && document.all(objectId)) {
	  // MSIE 4 DOM
	  return document.all(objectId).style;
    } else if (document.layers && document.layers[objectId]) {
	  // NN 4 DOM.. note: this won't find nested layers
	  return document.layers[objectId];
    } else {
	  return false;
    }
} // getStyleObject

function changeObjectPosition(objectId,parentId) {
    var styleObject = getStyleObject(objectId);
    var parentObject = getObject(parentId);
    //alert("Parent: " + parentObject.offsetLeft + " " + parentObject.offsetTop + " ns6: " + ns6);
    
    if (parentObject) {
      if (objectId == 'search' && ns6 ) {
        var x = parentObject.offsetLeft + 10;
        var y = parentObject.offsetTop  + -10;
        //alert(x + "/" + y);
        parentObject.offsetLeft = x;
        parentObject.offsetTop = y;
        //alert("Left: " + parentObject.offsetLeft + " Top: " + parentObject.offsetTop);
        
      }
      else if (objectId == 'search2' && ns6 ) {
        var x = parentObject.offsetLeft + 5;
        var y = parentObject.offsetTop  + 30;
        //alert(objectId + x + "/" + y);      

      } else {
        var x = parentObject.offsetLeft + 5;
        var y = parentObject.offsetTop  + 1;
      }
    }
    
    if(styleObject) {
    //alert("top: " + styleObject.top + " left: " + styleObject.left);
      if (styleObject.top && y){
	      styleObject.top = y;
      }
      if (styleObject.left && x){
	      styleObject.left = x;
      }
      //alert(objectId + " offset: " + styleObject.left + "/" + styleObject.top);

      return true;
    } else {
	// we couldn't find the object, so we can't change its visibility
	return false;
    }
} // changeObjectPosition

function changeObjectVisibility(objectId, newVisibility) {
    // get a reference to the cross-browser style object and make sure the object exists
    var styleObject = getStyleObject(objectId);    
    var tdObject = getObject(objectId + "-td");
    var ggparent = 0;
    var gparent = 0;
    var parent = 0;
    
    if (tdObject) {
      if (tdObject.offsetParent.offsetParent.offsetParent){
        ggparent = tdObject.offsetParent.offsetParent.offsetParent.offsetTop;
      }
      if (tdObject.offsetParent.offsetParent){
        gparent = tdObject.offsetParent.offsetParent.offsetTop;
      }
      if (tdObject.offsetParent){
        parent = tdObject.offsetParent.offsetTop;
      }

      var x = tdObject.offsetLeft + tdObject.offsetWidth + 10;
      var y = tdObject.offsetTop + parent + gparent + ggparent + 25;
    }
    
    if(styleObject) {
	  styleObject.visibility = newVisibility;
	  if (newVisibility == "visible"){
	    if (styleObject.top && y){
	      styleObject.top = y + 'px';
	    }
	    if (styleObject.left && x){
	      styleObject.left = x + 'px';
	    }
	    //alert(objectId + " offset: " + x + "/" + y);
	  }

	return true;
    } else {
	// we couldn't find the object, so we can't change its visibility
	return false;
    }
} // changeObjectVisibility

function moveObject(objectId, newXCoordinate, newYCoordinate) {
    // get a reference to the cross-browser style object and make sure the object exists
    var styleObject = getStyleObject(objectId);
    if(styleObject) {
	styleObject.left = newXCoordinate;
	styleObject.top = newYCoordinate;
	return true;
    } else {
	// we couldn't find the object, so we can't very well move it
	return false;
    }
} // moveObject