function pegaElementos(){
	if(!document.getElementsByTagName){return;}
	var elems = document.getElementsByTagName("a");
	for(var i=1; i<elems.length; i++){
		if (elems[i].getAttribute('rel').substr(0,1)=='*'){
			elems[i].onmouseover=function(){abre_ballon(this);document.getElementById('framebalao').src = this.getAttribute('rel').substr(1,this.getAttribute('rel').length);};
		}
	}
}
function abre_ballon(e){
    var offsetLeft = 0;
    var offsetTop = 0;
    while (e) {
        offsetLeft += e.offsetLeft;
        offsetTop += e.offsetTop;
        e = e.offsetParent;
    }
	var div = document.getElementById("ballon");
	div.style.display = "block";
	div.style.left =offsetLeft+80;
	div.style.top = offsetTop-120;
//	alert(e.offsetHeight);
}
function fecha_ballon(){
	var div = document.getElementById("ballon");
	div.style.display = "none";
}