/************************************************************************************************************
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)
{
    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 = 'ajax_tooltip_content';
        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-leftPos : window.innerWidth-leftPos
    var bottomedge=ajax_tooltip_MSIE? document.body.clientHeight-topPos : window.innerHeight-topPos
    */
    var tooltipWidth = document.getElementById('ajax_tooltip_content').offsetWidth +  document.getElementById('ajax_tooltip_arrow').offsetWidth; 
    // Dropping this reposition for now because of flickering
    //var offset = tooltipWidth - rightedge; 
    //if(offset>0)leftPos = Math.max(0,leftPos - offset - 5);
    
    ajax_tooltipObj.style.left = leftPos + 'px';
    ajax_tooltipObj.style.top = topPos + 'px';
    
    
}


function ajax_hideTooltip()
{
    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;
}