var user = "oacinfo";
var domain = "oacrecordingstudio";
var suffix = "com";
var add = "?subject=Website Message: ";

document.write('<a href="' + 'mailto:' + user + '@' + domain + '.' + suffix + add +'">' + user + '@' + domain + '.' + suffix + '</a><br>');

//document.write('test<br>');