function popup (u) {
	window.open(u,'popup','height=450,width=800,scrollbars=1,resizable=1,menubar=0,toolbar0,status=1,location=0,directories=0');
}

function validateNum (o) { // allow only numeric entries in dim matrix
	if (isNaN(o.value) && o.value != null && o.value != "") {
		alert("Please enter numbers only."); o.value=""; o.focus();
	} 
}

function obfuscatemail(u,d) {
  document.write('<a href="mai'+'lto:'+u+'@'+d+'">'+u+'@'+d+'</a>');
}