function validateForm(){

var frm = document.forms['myform'];
	if(frm.user.value==""){
			alert("Name cannot be left empty");
			return false;
	}if(frm.emailaddress.value==""){
			alert("Email Address cannot be left empty");
			return false;
	}if(frm.contact.value==""){
			alert("Contact number cannot be left empty");
			return false;
	}if(frm.comments.value==""){
			alert("Comments cannot be left empty");
			return false;
	}
	var len =  frm.hobby.length;
		if(len > 0){
			for(var i=0;i<len;i++){
				if(frm.hobby[i].checked==true){
					var val = true;
					break;
				}else{
					var val = false;
					}
			}
		}
	if(val==false){
		alert("Hobby cannot be left unselected");
		return false;
	}else{
		if(frm.terms.checked==false){
			alert("Terms and conditions cannot be lefted unselected");
			return false;
		}
	}
	document.forms['myform'].submit();
}