function showRelated(field) {
	var obj = document.getElementById(field);
	var rel = document.getElementById(field+"_f");
	if(obj.checked == true) {
		if(rel.tagName == "DIV") rel.style.display = "block";
		if(rel.tagName == "SPAN") rel.style.display = "inline";
	}
	else rel.style.display = "none";
}

function addInputSubmitEvent(form, input) {
	input.onkeydown = function(e) {
		e = e || window.event;
		if (e.keyCode == 13) {
			form.submit();
			return false;
		}
	};
}

window.onload = function() {
	var forms = document.getElementsByTagName("form");

	for(var i=0;i < forms.length;i++) {
		var inputs = forms[i].getElementsByTagName("input");

		for (var j=0;j < inputs.length;j++) {
			addInputSubmitEvent(forms[i], inputs[j]);
		}
	}
};