function getEl (id) {
	return document.getElementById(id);
}

function showInfo(event,elm,text){
 var infobox = getEl('infobox');
 if(text!=''){
    infobox.innerHTML=text;
    infobox.style.display='block';

    if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){ 
      infobox.style.left=event.clientX + document.body.scrollLeft + 20 + 'px';
      infobox.style.top=event.clientY + document.body.scrollTop + 23 + "px"; 
    }else{
      infobox.style.left=event.pageX + 20 + "px";
      infobox.style.top=event.pageY + 25 + "px";
    }
  }
}

function hideInfo(){
  var infobox = getEl('infobox');
  infobox.style.display='none';
}