//var delay=3;
var delay=3;
var nilai=0;

function changeText(){
	var nil1, nil2, nil3;
	nilai++;
	if (nilai == 1) { 
		nil1 = document.getElementById('nil1').style; nil1.display = "block";
		nil2 = document.getElementById('nil2').style; nil2.display = "none";
		nil3 = document.getElementById('nil3').style; nil3.display = "none";
	} else if (nilai == 2) { 
		nil1 = document.getElementById('nil1').style; nil1.display = "none";
		nil2 = document.getElementById('nil2').style; nil2.display = "block";
		nil3 = document.getElementById('nil3').style; nil3.display = "none";
	} else if (nilai == 3) { 
		nil1 = document.getElementById('nil1').style; nil1.display = "none";
		nil2 = document.getElementById('nil2').style; nil2.display = "none";
		nil3 = document.getElementById('nil3').style; nil3.display = "block";
		nilai = 0;
	}
	
	setTimeout("changeText()",delay*1000);
}