var root = "";

function clearField (field_id) {
	var f = document.getElementById(field_id);
	f.value = '';
}

function openPopUp(url) {
	window.open(url, null, "width=455,height=270,menubar=no,toolbar=no,top=100,left=600,location=no,resizable=no,scrollbars=no");
}

function openMail(url) {
	window.open(url, null, "width=407,height=550,menubar=no,toolbar=no,top=100,left=600,location=no,resizable=no,scrollbars=no");
}

function closeWindow() {
	window.close();
}