// JavaScript Document
function comprobarCheckbox(campo) {
	campo.value = (campo.checked) ? 1 : 0;
}

function abrirVentana(url, width, height, scrollbars) {
	var left   = (screen.width  - width)/2;
	var top    = (screen.height - height)/2;
	var params = 'width='+width+', height='+height;
	params += ', top='+top+', left='+left;
	params += ', directories=no';
	params += ', location=no';
	params += ', menubar=no';
	params += ', resizable=no';
	params += ', scrollbars='+scrollbars;
	params += ', status=no';
	params += ', toolbar=no';

	ventana = window.open(url,'icontrata',params);	
}