function validar() { 
	var errstr = "";
	// If date blank
	if (document.getElementById('pDate').value=="")
		errstr += "Please enter your pick up date\n";
	if (document.getElementById('dDate').value=="")
		errstr += "Please enter your drop off date\n";
	if (document.getElementById('phoras').value== "-")
		errstr += "Please enter your pick up hour\n";
	if (document.getElementById('pminutos').value== "-")
		errstr += "Please enter your pick up minutes\n";
	if (document.getElementById('dhoras').value== "-")
		errstr += "Please enter your drop off hour\n";
	if (document.getElementById('dminutos').value== "-")
		errstr += "Please enter your drop off minutes\n";

	if (errstr.length == 0) {
		document.getElementById('f').submit();
		return true;
	} else {
		alert(errstr);
		return false;
	}
}

function validar2() { 
	var errstr = "";
	// If date blank
	if (document.getElementById('pDate').value=="")
		errstr += "Please enter your pick up date\n";
	if (document.getElementById('dDate').value=="")
		errstr += "Please enter your drop off date\n";
	if (document.getElementById('phoras').value== "-")
		errstr += "Please enter your pick up hour\n";
	if (document.getElementById('pminutos').value== "-")
		errstr += "Please enter your pick up minutes\n";
	if (document.getElementById('dhoras').value== "-")
		errstr += "Please enter your drop off hour\n";
	if (document.getElementById('dminutos').value== "-")
		errstr += "Please enter your drop off minutes\n";

	if (errstr.length == 0) {
		return true;
	} else {
		alert(errstr);
		return false;
	}
}