function openWindows(url, window_width, window_height, scroll, window_left, window_top) {
if (window_top == null)
	window_top = (screen.height - window_height) / 2;

if (window_left == null)
	window_left = (screen.width - window_width) /2 ;

if (scroll == null)
	scroll = 'yes';
    open(url, 'page', 'directories=no, location=no, height='+window_height+', left='+ window_left+', menubar=no, resizable=yes, scrollbars='+scroll+', status=no, toolbar=no, top='+ window_top+', width='+window_width);
}

function Validate_mail() {
Email = document.forms["EmailList"].Email.value;
a = Email.indexOf("@");
b = Email.lastIndexOf(".");
if (!((b > a+1) && (Email.length > b+1))){
    alert("Моля въведете валиден e-mail!");
    document.forms["EmailList"].Email.focus()
    return false;
}
document.forms["EmailList"].action="email.php";
document.forms["EmailList"].submit();
}