var newWin=null;
var onscreen=false;

function NewWin(url,name,img,desc,width,height,imgw,imgh)
{
  var xpos=screen.width/2-width/2;
  var ypos=screen.height/2-height/2;
  newWin=window.open(
    url+'?'+img+':'+desc+':'+imgw+':'+imgh,
    name,
    'left='+xpos+',top='+ypos+',width='+width+',height='+height+ 
    ',location=0,resizable=0,status=0,titlebar=1,directories=0,toolbar=0,menubar=0,scrollbars=0,status=0'
  );
  newWin.focus();
  onscreen=true; 
}

function checkform(){
  if (frmcontact.pName.value == ''){
    alert('Please enter your name');
    frmcontact.pName.focus();
    return false;
  }
  else if ((frmcontact.pTelephone.value == '') && (frmcontact.pEmail.value == '')){
    alert('Please enter your telephone or email');
    frmcontact.pTelephone.focus();
    return false;
  }
  else if (frmcontact.pEnquiry.value == ''){
    alert('Please enter your enquiry');
    frmcontact.pEnquiry.focus();
    return false;
  }
  else
    document.frmcontact.submit();
}