function spopup(page,w,h){
  var left = Math.round(document.body.clientWidth/2) - Math.round(w/2);
  var top = Math.round(document.body.clientHeight/2) - Math.round(h/2);
  window.open(page,'w1','top='+top+',left='+left+',titlebar=no,width='+w+',height='+h+',toolbar=no,directories=no,status=no,scrollbars=no,resize=no,menubar=no');
}
function npopup(page)
{
  window.open(page,'w1','top=50,left=0,titlebar=no,width=600,height=800,toolbar=no,directories=no,status=no,scrollbars=yes,resize=yes,menubar=no');
}
function checkFields(){
  if(document.getElementById('name').value.indexOf(' ')>0){
    alert('The name should include only one word without spaces');
    var ret = false;
  }else{
    var ret = true;
  }
  if(ret == true){
    document.getElementById('searching').style.display='block';
  }
  return ret;
}