function showDiv(num){
	var i = 1;
	for (i=0;i<1000;i++){
		if (document.getElementById('c' + i)){
			eval("document.getElementById('c" + i +"').style.display = 'none'");
			eval("document.getElementById('bt" + i +"').className = ''");
			if (i == num) {
				eval("document.getElementById('c" + num +"').style.display = 'block'");
				eval("document.getElementById('bt" + num +"').className = 'on'");
			}
		}
	}
	sorteiaProjects();	
}

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;
				// anchor.className = 'externo'
            }
        }
    }
}