function max(a, b)
{
  a = (a>0) ? a: 0;
  b = (b>0) ? b: 0;
  if(a > b)
    return a;
  return b;
}

function help_show(evt, TEXT, ITEM, Pic)
{
 evt=evt||window.event;
 var item = document.getElementById(ITEM);
 var help_tab = document.createElement("table");
 var help_tr = help_tab.insertRow(-1);
 var help_cell = help_tr.insertCell(-1);

 if(Pic != null)
 {
   var help_image = document.createElement("img");
   help_image.src=Pic;
   help_image.style.width=320;
   help_cell.appendChild(help_image);
   help_tr= help_tab.insertRow(-1);
   help_cell = help_tr.insertCell(-1);
 }
 
 var posx=evt.pageX||(evt.x+document.body.scrollLeft);
 if(posx > 620)
   posx=250;
 else
   posx=780;

 
 var posy=  evt.pageY||(evt.y+document.body.scrollTop);
 posy = max(posy - evt.clientY + 180, posy-500);
 var lines = TEXT.split("\n");
 for(var i = 0; i < lines.length; i++){
 	var help_text = document.createTextNode(lines[i]);
 	help_cell.appendChild(help_text);
	help_cell.appendChild(document.createElement("br"));
	}
 help_tab.style.position="absolute";
 help_tab.style.tableLayout="fixed";
 help_tab.style.width="324px";
 help_tab.style.top=posy;
 help_tab.style.left=posx;
 help_tab.style.backgroundColor="#807768";
 item.hp_help=help_tab;
 item.appendChild(help_tab);

}

function help_end(ITEM)
{
   try{
   var item = document.getElementById(ITEM);
   item.removeChild(item.hp_help);
   } catch(x) {}
}