function addEventLis(obj, evType, fn){
    if (obj.addEventListener)
		obj.addEventListener(evType, fn, true);
	if (obj.attachEvent)
		obj.attachEvent("on"+evType, fn);
}

function rand( min, max ) {
	var randomNum = Math.random() * (max-min); 
	return(Math.round(randomNum) + min);
}

var idx = -1;

function slide() {
	var itens = document.getElementById("dicas").getElementsByTagName("li");
	for(i=0; i < itens.length; i++) {
		itens[i].style.display = 'none';
	}
	if( idx < 0 )
		idx = rand(0, itens.length - 1);

    var $j = jQuery.noConflict();

	$j(itens[idx]).fadeIn("slow"); 
	itens[idx].style.display = 'block';
	idx++;
	if( idx > itens.length - 1)
		idx = 0;
}

addEventLis( window, "load", function(e){
	var itens = document.getElementById("dicas").getElementsByTagName("li");
	for(i=0; i < itens.length; i++) {
		itens[i].style.display = 'none';
	}
	
	if( itens.length > 0 ) {
		setInterval( "slide()", 7000);
	}
});