function CheckForm()
{
var msg = "";
		var formobj = document.register;
		var alphaExp = /^[0-9a-zA-Z]+$/;
		if (formobj.password.value == "")	{msg = msg + "- Please Fill the password!\n";}
		if (formobj.tos.checked == false)	{msg = msg + "- Please accept the terms of use!\n";}
		
		
		if (formobj.username.value == "")	{
			msg = msg + "- Please Fill the username!\n";
		} else {
			if ((formobj.username.value.length < 4) || (formobj.username.value.length > 10)) {msg = msg + "- username charecter length must be more than 4 and less than 11\n";}
			if(!(formobj.username.value.match(alphaExp))){msg = msg + "- username must be letters and numbers\n";}
		}
		
		if (formobj.email.value == "")	{
			msg = msg + "- Please Fill email\n";
		} else {
			if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/.test(formobj.email.value)) {
			} else {
				msg = msg + "- Email is wrong!\n";
			}
		}
		
				if (msg == "") {
			return true;
		}else {
			alert("The following fields are mandatory:\n\n" + msg);
			return false;
		}
}