function checkMail(email) {
	var filter  = /^([a-zA-Z0-9åäöÅÄÖüÜÆæØø_\.\-])+\@(([a-zA-Z0-9åäöÅÄÖüÜÆæßØø\-])+\.)+([a-zA-Z0-9åäöÅÄÖüÜÆæØø]{2,5})+$/;
	if (filter.test(email)) { return true; } else { return false; }
}

function IsNumeric(sText) {
	var ValidChars = "0123456789";
	var IsNumber=true;
	var Char;
	for (i = 0; i < sText.length && IsNumber == true; i++) { 
		Char = sText.charAt(i); 
		if (ValidChars.indexOf(Char) == -1) {
			IsNumber = false;
		}
	}
	return IsNumber;
}

function joinCheck(callingfrom) {
	var errormsg = "";
	if (!checkMail(document.getElementById('iemail').value)) { errormsg += "* Annoit virheellisen sähköpostiosoitteen.\n"; }
	if (document.getElementById('ifirstname').value.length < 3) { errormsg += "* Annoit virheellisen nimen.\n"; }

	if (document.getElementById('imobile').value != ""){
		document.getElementById('imobile').value = document.getElementById('imobile').value.replace(/ /gi,'');
		if (!IsNumeric(document.getElementById('imobile').value)) {
			errormsg += "* Sinun puhelinnumerosi ei ole oikea.\n";
		}
	}

	if (errormsg != "") {
		alert(errormsg);
		return false;
	}

	var nameObj = document.getElementById('ifirstname').value;
	if (nameObj.indexOf(' ') > 0) {
		document.getElementById('ilastname').value = nameObj.substring(nameObj.indexOf(' '));
		document.getElementById('ifirstname').value = nameObj.substring(0,nameObj.indexOf(' '));
	}

	if (callingfrom == 'link') {
		document.getElementById('iform').submit();
	} else {
		return true;
	}

	return true;
}

function popup(url, width, height) {
	var winleft = (screen.width - width) / 2;
	var wintop = ((screen.height - height) / 2) - (screen.height/20);
	var w = window.open(url, "popup", "width="+width+",height="+height+",left="+winleft+",top="+wintop+",scrollbars=no,resizable=no");
	w.focus();
}