/************************************************************************************************************
Ajax tooltip
Copyright (C) 2006  DTHMLGoodies.com, Alf Magne Kalleland

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

Dhtmlgoodies.com., hereby disclaims all copyright interest in this script
written by Alf Magne Kalleland.

Alf Magne Kalleland, 2006
Owner of DHTMLgoodies.com
	
************************************************************************************************************/	




/* Custom variables */

/* Offset position of tooltip */
var x_offset_tooltip = 5;
var y_offset_tooltip = 0;

/* Don't change anything below here */


var ajax_tooltipObj = false;
var ajax_tooltipObj_iframe = false;

var ajax_tooltip_MSIE = false;
if(navigator.userAgent.indexOf('MSIE')>=0)ajax_tooltip_MSIE=true;


function ajax_showTooltip(externalFile,inputObj,cssClass)
{
    if(ajax_tooltipObj) document.body.removeChild(ajax_tooltipObj);

	//if(!ajax_tooltipObj)	/* Tooltip div not created yet ? */
	//{
		ajax_tooltipObj = document.createElement('DIV');
		ajax_tooltipObj.style.position = 'absolute';
		ajax_tooltipObj.id = 'ajax_tooltipObj';		
		document.body.appendChild(ajax_tooltipObj);
		
//		var leftDiv = document.createElement('DIV');	/* Create arrow div */
//		leftDiv.className='ajax_tooltip_arrow';
//		leftDiv.id = 'ajax_tooltip_arrow';
//		ajax_tooltipObj.appendChild(leftDiv);
		
		var contentDiv = document.createElement('DIV'); /* Create tooltip content div */
		contentDiv.className = cssClass;
		ajax_tooltipObj.appendChild(contentDiv);
		contentDiv.id = 'ajax_tooltip_content';
		
		if(ajax_tooltip_MSIE){	/* Create iframe object for MSIE in order to make the tooltip cover select boxes */
			ajax_tooltipObj_iframe = document.createElement('<IFRAME frameborder="0">');
			ajax_tooltipObj_iframe.style.position = 'absolute';
			ajax_tooltipObj_iframe.border='0';
			ajax_tooltipObj_iframe.frameborder=0;
			ajax_tooltipObj_iframe.style.backgroundColor='#FFF';
			ajax_tooltipObj_iframe.src = 'about:blank';
			contentDiv.appendChild(ajax_tooltipObj_iframe);
			ajax_tooltipObj_iframe.style.left = '0px';
			ajax_tooltipObj_iframe.style.top = '0px';
		}

			
	//}

	// Find position of tooltip
	ajax_tooltipObj.style.display='block';
	ajax_loadContent('ajax_tooltip_content',externalFile);
	if(ajax_tooltip_MSIE){
		ajax_tooltipObj_iframe.style.width = ajax_tooltipObj.clientWidth + 'px';
		ajax_tooltipObj_iframe.style.height = ajax_tooltipObj.clientHeight + 'px';
	}

	ajax_positionTooltip(inputObj);
}

function ajax_positionTooltip(inputObj)
{
	var leftPos = (ajaxTooltip_getLeftPos(inputObj) + inputObj.offsetWidth);
	var topPos = ajaxTooltip_getTopPos(inputObj);
	
	var rightEdge = ajax_tooltip_MSIE? document.body.clientWidth : window.innerWidth
	var bottomEdge = ajax_tooltip_MSIE? document.body.clientHeight : window.innerHeight
    bottomEdge -= 20;
    rightEdge -= 20;

	var tooltipWidth = document.getElementById('ajax_tooltip_content').offsetWidth;// +  document.getElementById('ajax_tooltip_arrow').offsetWidth; 
    var tooltipHeight = document.getElementById('ajax_tooltip_content').offsetHeight;

    if(tooltipHeight + topPos > bottomEdge + document.body.scrollTop) {
        topPos -= (tooltipHeight + topPos) - (bottomEdge + document.body.scrollTop);
        }
    if(tooltipWidth + leftPos > rightEdge) {
        leftPos -= (inputObj.offsetWidth + tooltipWidth);
        }

	ajax_tooltipObj.style.left = leftPos + 'px';
	ajax_tooltipObj.style.top = topPos + 'px';	
}


function ajax_hideTooltip()
{
    if(ajax_tooltipObj){
	    ajax_tooltipObj.style.display='none';
    }
}

function ajaxTooltip_getTopPos(inputObj)
{		
  var returnValue = inputObj.offsetTop;

  while((inputObj = inputObj.offsetParent) != null){
  	if(inputObj.tagName!='HTML')returnValue += inputObj.offsetTop;
  }
  return returnValue;
}

function ajaxTooltip_getLeftPos(inputObj)
{
  var returnValue = inputObj.offsetLeft;
  while((inputObj = inputObj.offsetParent) != null){
  	if(inputObj.tagName!='HTML')returnValue += inputObj.offsetLeft;
  }
  return returnValue;
}