function alto() { try {	return screen.height;}  catch(error) {return 0;}  return false;}
function ancho(){ try {	return screen.width;} catch(errmsg) {return 0;} return false;}

function DAcrobat()
{
var acrobat=new Object();
acrobat.installed=false;
acrobat.version='0.0';

if (navigator.plugins && navigator.plugins.length)
{
	for ( var x = 0, l = navigator.plugins.length; x < l; ++x )
	{
		if (navigator.plugins[x].description.indexOf('Adobe PDF') != -1)
		{			
			acrobat.version=parseFloat(navigator.plugins[x].description.split('Version ')[1]);
			if (acrobat.version.toString().length == 1) 
				acrobat.version+='.0';
			acrobat.installed=true;
			break;
		}
	}
}
else if (window.ActiveXObject)
{
	for (x=2; x<10; x++)
	{
		try
		{
			oAcro=eval("new ActiveXObject('PDF.PdfCtrl."+x+"');");
			if (oAcro)
			{
				acrobat.installed=true;
				acrobat.version=x+'.0';
			}
		}
		catch(e) {}
	}

	try
	{
		oAcro4=new ActiveXObject('PDF.PdfCtrl.1');
		if (oAcro4)
		{
			acrobat.installed=true;
			acrobat.version='4.0';
		}
	}
	catch(e) {}

	try
	{
		oAcro7=new ActiveXObject('AcroPDF.PDF.1');
		if (oAcro7)
		{
			acrobat.installed=true;
			acrobat.version='7.0';
		}
	}
	catch(e) {}
}

return acrobat.installed;
}

function checkNav()
{
	var vnombre = navigator.appName;
	var vcodigo_nombre = navigator.appCodeName;
	var vversion = navigator.appVersion;
	var vplataforma = navigator.platform;
	var vjavaEnabled = navigator.javaEnabled();
	var vpantalla_ancho = ancho();
	var vpantalla_alto = alto();
	var vacrobat_installed = DAcrobat();

	var params = '&nombre=' + vnombre + '&codigo=' + vcodigo_nombre + '&ver=' + vversion + '&plat=' + vplataforma + '&jenabled=' + vjavaEnabled + '&scrw=' + vpantalla_ancho + '&scrh=' + vpantalla_alto + '&acrobat=' + vacrobat_installed;

	tAjax2('clientnav.php', params);
}

function tAjax2(page,params) {doAjax(page, params, 'resp2', 'get', 0);}
function resp2(){}