function validate_m() {
	var form = $('productform');
	var f = form.getElementsByTagName('input');
	for(i=0;i<f.length;i++) {
		if( (f[i].getAttribute('type')=='text') && (f[i].value == '') ) {
			alert('Please ensure you have filled in all required measurements');
			return false;
		}
	}
	return true;
}