//link externo
function init() {
	createExternalLinks();
}
function createExternalLinks() {
    if(document.getElementsByTagName) {
        var anchors = document.getElementsByTagName('a');
        for(var i=0; i<anchors.length; i++) {
            var anchor = anchors[i];
            if(anchor.getAttribute("href") && anchor.getAttribute('rel')=='externo') {
                anchor.target = '_blank';
                var title = anchor.title + ' (Este link abre uma nova janela)';
                anchor.title = title;
            }
        }
    }
}

function validaForm(form) {

    for (var i = 0; i < document.getElementById(form).elements.length; i++) {
		
		var nomeObj = document.getElementById(form).elements[i].name;
		var idObj = document.getElementById(form).elements[i].id;
		
        if ((document.getElementById(form).elements[i].value == "") && (nomeObj == idObj)) {
			alert("Nenhum valor foi digitado para " + document.getElementById(form).elements[i].name + ".");
			document.getElementById(form).elements[i].style.background 	= "#3086D5";
			document.getElementById(form).elements[i].style.border	 	= "1px solid #CCC";
			document.getElementById(form).elements[i].style.color 		= "#FFF";
  			document.getElementById(form).elements[i].focus();
            return false;
        }
    }
    return true;
}