// JavaScript Document


// Set Netscape up to run the "captureMousePosition" function whenever
// the mouse is moved. For Internet Explorer and Netscape 6, you can capture
// the movement a little easier.
if (document.layers) { // Netscape
    document.captureEvents(Event.MOUSEMOVE);
    document.onmousemove = captureMousePosition;
} else if (document.all) { // Internet Explorer
    document.onmousemove = captureMousePosition;
} else if (document.getElementById) { // Netcsape 6
    document.onmousemove = captureMousePosition;
}
// Global variables
xMousePos = 0; // Horizontal position of the mouse on the screen
yMousePos = 0; // Vertical position of the mouse on the screen
xMousePosMax = 0; // Width of the page
yMousePosMax = 0; // Height of the page

function captureMousePosition(e) {
    if (document.layers) {
        // When the page scrolls in Netscape, the event's mouse position
        // reflects the absolute position on the screen. innerHight/Width
        // is the position from the top/left of the screen that the user is
        // looking at. pageX/YOffset is the amount that the user has
        // scrolled into the page. So the values will be in relation to
        // each other as the total offsets into the page, no matter if
        // the user has scrolled or not.
        xMousePos = e.pageX;
        yMousePos = e.pageY;
        xMousePosMax = window.innerWidth+window.pageXOffset;
        yMousePosMax = window.innerHeight+window.pageYOffset;
    } else if (document.all) {
        // When the page scrolls in IE, the event's mouse position
        // reflects the position from the top/left of the screen the
        // user is looking at. scrollLeft/Top is the amount the user
        // has scrolled into the page. clientWidth/Height is the height/
        // width of the current page the user is looking at. So, to be
        // consistent with Netscape (above), add the scroll offsets to
        // both so we end up with an absolute value on the page, no
        // matter if the user has scrolled or not.
        xMousePos = window.event.x + document.documentElement.scrollLeft;
        yMousePos = window.event.y + document.documentElement.scrollTop;
        xMousePosMax = document.body.clientWidth+document.documentElement.scrollLeft;
        yMousePosMax = document.body.clientHeight+document.documentElement.scrollTop;
    } else if (document.getElementById) {
        // Netscape 6 behaves the same as Netscape 4 in this regard
        xMousePos = e.pageX;
        yMousePos = e.pageY;
        xMousePosMax = window.innerWidth+window.pageXOffset;
        yMousePosMax = window.innerHeight+window.pageYOffset;
    }
}

function showHelp(help_text){
	//alert('show '+help_id);
	toggleMoveLayer( 'editHelp', xMousePos, yMousePos, help_text );
}

function hideHelp(help_text){
	//alert('hide '+help_id);
	toggleMoveLayer( 'editHelp', xMousePos, yMousePos, help_text );
}

function toggleMoveLayer( whichLayer, new_x, new_y, help_text )
{
  var elem, vis;
  if( document.getElementById ){ // this is the way the standards work
    elem = document.getElementById( whichLayer );
  }else if( document.all ){ // this is the way old msie versions work
      elem = document.all[whichLayer];
	  new_x = new_x + document.body.clientWidth;
	  new_y = new_y + document.body.clientHeight;
  }else if( document.layers ){ // this is the way nn4 works
    elem = document.layers[whichLayer];
  }
  vis = elem.style;
  // if the style.display value is blank we try to figure it out here
  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
    vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
  vis.display = (vis.display==''||vis.display=='block')?'none':'block';

elem.innerHTML = help_text;

	vis.left = new_x+20 + 'px';	
	vis.top = new_y-10 + 'px';
}