var close_time = "";
var id_anterior = "";
function open_change(id){
	clearTimeout(this.close_time);
	if(this.id_anterior != ""){
	   Hide(document.getElementById("tbtxt_" + this.id_anterior));
	   Show(document.getElementById("tbimg_" + this.id_anterior));
	}
	Hide(document.getElementById("tbimg_" + id));
   Show(document.getElementById("tbtxt_" + id));
	this.id_anterior = id;
}
function close_change(id){
   clearTimeout(this.close_time);
	this.close_time = setTimeout("close_end('" + id + "')", 10);
}
function close_end(id){
	Hide(document.getElementById("tbtxt_" + id));
	Show(document.getElementById("tbimg_" + id));
}