function AbreJanela(link,nomejan,x,y,janscroll,janstatus){
	janela=window.open(link,nomejan,"width="+x+",height="+y+",scrollbars="+janscroll+",resize=no,tollbars=no,status="+janstatus);
	scrX=(screen.width-x)/2;
	scrY=(screen.height-y)/2;
	janela.focus();
	janela.moveTo(scrX,scrY);
}
function showdiv(objdiv){

 var divref = document.getElementById(objdiv);
 if (divref.style.display == "block" || divref.style.display == '' ) {
  divref.style.display = "none";
 } else  divref.style.display = "block";

}