function setFocus(id) {
	if (typeof(id) != 'undefined') {
		createSetFocusFunc(id);
		addLoadEvent(dynamicSetFocusFunc);
	}
	else {
		addLoadEvent(defaultSetFocusFunc);
	}
}

function defaultSetFocusFunc() {
	document.forms[0].elements[0].focus();
}

function createSetFocusFunc(input_id) {
	document.write('<script type="text/javascript">')
	document.write('function dynamicSetFocusFunc() {');
	document.write('document.getElementById("'+input_id+'").focus();');
	document.write('}');
	document.write('</script>');
}