function isNumberKey(evt){
var charCode = (evt.which) ? evt.which : event.keyCode
if (charCode > 31 && (charCode < 48 || charCode > 57))
return false;

return true;
}


//--------------------------------------------------reg validate form
function chvalidate(){
	if(document.chform.age.value==""){
		alert("Choose your age range")
		document.chform.aname.focus()
		return false;
	}
	else if ((document.chform.email.value.indexOf("@") == -1)||(document.chform.email.value.indexOf(".") == -1)){
		alert("Not a valid e-mail")
		document.chform.email.focus()
		return false;
	}
	else if(document.chform.aname.value==""){
		alert("Enter a Name")
		document.chform.aname.focus()
		return false;
	}
	return true;
}