function check_field(field,name,type) {
	if(type==1){
		if(field.length < 2){
			document.getElementById('field_' + name).innerHTML = '<span style="color: red;">Name must contain more than 2 characters.</span>';
		} else {
			document.getElementById('field_' + name).innerHTML = '';
		}
	}

	if (type == 2) {
		var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;

		if (!filter.test(field)) {
			document.getElementById('field_' + name).innerHTML = '<span style="color: red;">A valid e-mail address is required.</span>';
		} else {
			document.getElementById('field_' + name).innerHTML = '';
		}
	}
}