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';
    //var offset=int(infobox.offsetWidth/2);
    var off = infobox.offsetWidth / 2;
    //alert(off);
    if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){ 
      infobox.style.left=event.clientX + document.body.scrollLeft + 5 - off + 'px';
      infobox.style.top=event.clientY + document.body.scrollTop + 23 + "px"; 
    }else{
      infobox.style.left=event.pageX + 5 - off + "px";
      infobox.style.top=event.pageY + 25 + "px";
    }
  }
}

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

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}