/**
 * Function request to do something
 */
function request(message)
{
  if(confirm(message)) return true;
  else return false;
}

/**
 * Function request to do something
 */
function doConfirm(message)
{
  if(confirm(message)) return true;
  else return false;
}

/**
 * Function roll & expand hidden elements
 * Events -> onclick & ondbclick
 */
function expand(id)
{
  document.getElementById(id+'_opened').style.display = '';
  document.getElementById(id+'_closed').style.display = 'none';
}
function roll(id)
{
  document.getElementById(id+'_opened').style.display = 'none';
  document.getElementById(id+'_closed').style.display = '';
}

/**
 * Function do helpful messages (better ALT or TITLE attributes)
 * Events -> onmouseover & onmouseout
 */
function da(quick, event, width)
{
  var w2 = $('jr_quick1');
  
  if(!(quick == '')) {
    $('quick1.HTML').update(quick);
    if(width > 0) w2.setStyle({ width: width + 'px' });
  }
  
  var viewport = document.viewport.getDimensions();
  var scroll = document.viewport.getScrollOffsets();
  var offsetMouse = [12, 4, 7, 23];
  
  var posX = event.clientX + scroll[0];
  var posY = event.clientY + scroll[1];
  
  var edgeRight = parseInt(viewport.width + scroll[0] - (w2.getWidth() + 10));
  var edgeBottom = parseInt(viewport.height + scroll[1] - (w2.getHeight() + 15));
  
  if(posX > edgeRight) posX -= (w2.getWidth() - offsetMouse[0]);
  else posX -= offsetMouse[1];
  
  if(posY > edgeBottom) posY -= (w2.getHeight() + offsetMouse[2]);
  else posY += offsetMouse[3];
  
  w2.setStyle({ top: posY + 'px', left: posX + 'px' }).show();
  
  $$('body')[0].observe('mouseout', function(event) {
    $('quick1.HTML').update(); w2.hide();
  });
  $$('body')[0].observe('click', function(event) {
    $('quick1.HTML').update(); w2.hide();
  });
}

/**
 * Function open w2 window
 */
function w2(url, name, width, height, scroll)
{
  var w2 = window.open(url, name, 'marginheight=0,marginweight=0,toolbar=no,width='+width+
  ',height='+height+',left=20,top=20,resizable=no,scrollbars='+scroll);
  
  w2.focus();
}

/**
 * Function change the image on web page (menu effect)
 * Events -> onmouseover & onmouseout
 */
function im_change(id, iif, cond)
{
  if(cond==1) id.src = id.src.substr(0, id.src.length-7)+'-up.gif';
  else
  {
    if(iif==1) id.src = id.src.substr(0, id.src.length-4)+'-up.gif';
    else id.src = id.src.substr(0, id.src.length-7)+'.gif';
  }
  return true;
}

/**
 * Function do preload of the images
 * Load the images before web page is displayed
 */
function im_preload(im)
{ 
  var img = new Image(); 
  img.src = '/images'+im;
  
  return img; 
}