function startBlog() {
	var f1 = function () {
		if (document.getElementById('s').value == '') {
			document.getElementById('s').value = 'busca';
		}
	};
	
	var f2 = function () {
		document.getElementById('s').value = '';
	}
	
	document.getElementById('s').onfocus = f2;
	document.getElementById('s').onblur = f1;
	
	document.getElementById('s').value = 'busca';	
}