function GetRandom(iTotal) { var iRandomNumber = Math.round(Math.random() * iTotal); return iRandomNumber }
function TrocarDestaque() {
	var iNext
	iNext = (iCurrent == oDivs.length - 1) ? 0 : iCurrent + 1; 
	oDivs[iNext].style.display = 'block';
	oDivs[iCurrent].style.display = 'none';
	iCurrent = iNext
}
function Iniciar() { 
	var i, aDiv
	if (bStandard) {
		oDivs = document.getElementById("Lancamentos").getElementsByTagName("DIV")
		iCurrent = GetRandom(oDivs.length - 1)
		for (i = 0; i < oDivs.length ; i++) 
			oDivs[i].style.display = (i == iCurrent) ? 'block' : 'none'
		aDiv = setInterval("TrocarDestaque()", 4000) 
    }
}
var iCurrent, oDivs
var bStandard = (document.getElementsByTagName) ? true : false; 
window.onload = Iniciar