function submit_ereg() {
	var fName=document.f_ereg.er_name.value;
	var fEmail=document.f_ereg.er_email.value;
	if(!isValidEmail(fEmail)) {
		document.getElementById("er_err").innerHTML="Invalid email";
		var er = document.f_ereg.er_email;
		er.select();
		er.focus();
	}else{
	  alert("Thanks. We'll keep in touch.");
	  // proceed only if the xmlHttp object isn't busy
	  if (xmlHttp.readyState == 4 || xmlHttp.readyState == 0)
	  {
		// execute the php page from the server
		xmlHttp.open("GET", "email_reg.php?n=" + fName + "&e=" + fEmail, true);  
		// define the method to handle server responses
		xmlHttp.onreadystatechange = handle_Ereg;
		// make the server request
		xmlHttp.send(null);
	  }
	  else
	  {
		// if the connection is busy, try again after one second  
		setTimeout('submit_ereg()', 1000);
	   }
	}
}
function handle_Ereg() {
	var d=document.getElementById("div_email_reg");
	d.className="artOff";
}
function isValidEmail(email) {
	var reEmail = /^[-_.a-z0-9]+@(([-_a-z0-9]+\.)+(ad|ae|aero|af|ag|ai|al|am|an|ao|aq|ar|arpa|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|biz|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|com|coop|cr|cs|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gh|gi|gl|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|in|info|int|io|iq|ir|is|it|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|mg|mh|mil|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|museum|mv|mw|mx|my|mz|na|name|nc|ne|net|nf|ng|ni|nl|no|np|nr|nt|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|pro|ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5])\.){3}([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$/i;
	return reEmail.test(email);
}