function troca_span(quem){
	if(document.getElementById(quem).style.display == ""){
		document.getElementById(quem).style.display = "none";
	}else if(document.getElementById(quem).style.display == "none"){
		document.getElementById(quem).style.display = "";
	}
}




function openWin(sURL,sNome,iWidth,iHeight)
{
 window.open(sURL,sNome,"status=no,menubar=no,toolbar=no,width="+ iWidth +",height="+ iHeight +",scrollbars=yes, top="+ (screen.height - iHeight)/2 +",left="+(screen.width - iWidth)/2 + "directories=no");
}


function openwindow(url){
   win = window.open(url,"","width=750,height=470,resizable=no,status=yes,scrollbars=yes");
}