function validaNews(frm){
	if(frm.nome.value.replace(/\s/gi,"")==""){
		frm.nome.focus();
		alert("Informe o seu nome.");
		return false;
	}

	if(frm.email.value.indexOf("@")==-1){
		frm.email.focus();
		alert("Informe o email.");
		return false;
		}

	return true;
}


function amigos(){
	document.getElementById("pnl-amigos").style.display="block"
}

function amigos1(){
	document.getElementById("pnl-amigos").style.display="none"
}

function dropFile(btn){
	if(document.getElementById) {
		tr = btn;
	    
		while (tr.tagName != 'TR') tr = tr.parentNode;
	    	tr.parentNode.removeChild(tr);
	        checkForLast();
    }
}
	
function addFile(btn){
    if(document.getElementById) {
        tr = btn;
        while (tr.tagName != 'TR') tr = tr.parentNode;
        var idSuffix = Math.round(Math.random()*1000);
        var newTr = tr.parentNode.insertBefore(tr.cloneNode(true),tr.nextSibling);
        thisChilds = newTr.getElementsByTagName('td');
        for (var i = 0; i < thisChilds.length; i++){
            if (thisChilds[i].className == 'header') thisChilds[i].innerHTML = '';
            if (thisChilds[i].className == 'text') thisChilds[i].innerHTML = '';
        }
        checkForLast();
    }
}
	
function checkForLast(){
    btns = document.getElementsByName('drop');

    for (i = 0; i < btns.length; i++){
        btns[i].disabled = (btns.length == 1) ? true : false;
    }
}