function openSpreadsheet() {
  var width = 680;
  var height = 440;
  var x = window.screen.width;
  var y = window.screen.height;
  var left = (x - width) / 2;
  var top = (y - height) / 2;
  var params = "left=" + left + ",top=" + top + ",width=" + width + ",height=" + height + ",toolbar=no,statusbar=no,resizable=yes,scrollbars=yes";
  window.open("spreadsheet.php","spreadsheet",params); 
 }


 function openForm() {
  var width = 580;
  var height = 410;
  var x = window.screen.width;
  var y = window.screen.height;
  var left = (x - width) / 2;
  var top = (y - height) / 2;
  var params = "left=" + left + ",top=" + top + ",width=" + width + ",height=" + height + ",status";
  window.open("frameset.php","order",params); 
 }


 function validateEmail(src) {
//  var emailReg = "^[\\w-_\.]*[\\w-_\.]\@[\\w]\.+[\\w]+[\\w]$";
//  var regex = new RegExp(emailReg);
//  return regex.test(src);

//	var x = document.forms[0].email.value;
//	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
//	if (filter.test(x)) alert('YES! Correct email address');
//	else alert('NO! Incorrect email address');
  var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
  return filter.test(src);
 }


 function trySubmit() {
  var email = document.forms['email'].email.value;
  if (validateEmail(email))
   document.forms['email'].submit();
  else
   window.alert('Please provide a valid email address');
 }
 
  function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}