function click() {
if (event.button==2||event.button==3) {
 oncontextmenu='return false';
  }
}
document.onmousedown=click
document.oncontextmenu = new Function("return false;")

function roll_over(img_name, img_src) {
   document[img_name].src = img_src;
}

function AbrirJanela(url_pop) //Abrir janela para RECOMENDAR
{
     var PopWidth=850;
     var PopHeight=520;
     var PopLeft = (window.screen.width-PopWidth)/2;
     var PopTop = (window.screen.height-PopHeight)/2;
    
     Abrir=window.open(url_pop,'abrir','toolbar=no,status=no,menubar=no,location=no,directories=no,resizable=no,scrollbars=no,width='+PopWidth+',height='+PopHeight+',top='+PopTop+',left='+PopLeft);
}