function checkid(myform, mycheckbox) {
	if (myform.tripid1.value == mycheckbox.value) {
		myform.tripid1.value = '';
	} else if (myform.tripid2.value == mycheckbox.value) {
		myform.tripid2.value = '';
	} else if (myform.tripid3.value == mycheckbox.value) {
		myform.tripid3.value = '';
	} else if (myform.tripid1.value == '') {
		myform.tripid1.value = mycheckbox.value;
	} else if (myform.tripid2.value == '') {
		myform.tripid2.value = mycheckbox.value;
	} else if (myform.tripid3.value == '') {
		myform.tripid3.value = mycheckbox.value;
	} else {
alert('You may only compare up to 3 trips.');
		mycheckbox.checked = false;
		return false;
	}
	return true;
}

function checkid_offer(myform, mycheckbox) {
	if (myform.tripid1.value == mycheckbox.value) {
		myform.tripid1.value = '';
	} else if (myform.tripid2.value == mycheckbox.value) {
		myform.tripid2.value = '';
	} else if (myform.tripid3.value == mycheckbox.value) {
		myform.tripid3.value = '';
	} else if (myform.tripid4.value == mycheckbox.value) {
		myform.tripid4.value = '';
	} else if (myform.tripid5.value == mycheckbox.value) {
		myform.tripid5.value = '';
	} else if (myform.tripid6.value == mycheckbox.value) {
		myform.tripid6.value = '';
	} else if (myform.tripid7.value == mycheckbox.value) {
		myform.tripid7.value = '';
	} else if (myform.tripid8.value == mycheckbox.value) {
		myform.tripid8.value = '';
	} else if (myform.tripid9.value == mycheckbox.value) {
		myform.tripid9.value = '';
	} else if (myform.tripid10.value == mycheckbox.value) {
		myform.tripid10.value = '';
	} else if (myform.tripid1.value == '') {
		myform.tripid1.value = mycheckbox.value;
	} else if (myform.tripid2.value == '') {
		myform.tripid2.value = mycheckbox.value;
	} else if (myform.tripid3.value == '') {
		myform.tripid3.value = mycheckbox.value;
	} else if (myform.tripid4.value == '') {
		myform.tripid4.value = mycheckbox.value;
	} else if (myform.tripid5.value == '') {
		myform.tripid5.value = mycheckbox.value;
	} else if (myform.tripid6.value == '') {
		myform.tripid6.value = mycheckbox.value;
	} else if (myform.tripid7.value == '') {
		myform.tripid7.value = mycheckbox.value;
	} else if (myform.tripid8.value == '') {
		myform.tripid8.value = mycheckbox.value;
	} else if (myform.tripid9.value == '') {
		myform.tripid9.value = mycheckbox.value;
	} else if (myform.tripid10.value == '') {
		myform.tripid10.value = mycheckbox.value;
	} else {
alert('You may only offer up to 10 trips.');
		mycheckbox.checked = false;
		return false;
	}
	return true;
}

function comparetrips(myform) {
	var count = 3;
	if (myform.tripid1.value == '') {
		count -= 1;
	}
	if (myform.tripid2.value == '') {
		count -= 1;
	}
	if (myform.tripid3.value == '') {
		count -= 1;
	}
	if (count < 2) {
		alert('Please select at least 2 trips to compare.');
	} else {
		window.open('/search/compare.asp?tripid1=' + myform.tripid1.value + '&tripid2=' + myform.tripid2.value + '&tripid3=' + myform.tripid3.value, 'tripcompare', 'width=740,height=650,resizable=yes,scrollbars=yes,status=no,screenX=10,screenY=10');
	}
}

function offermail(myform) {
	var count = 10;
	if (myform.tripid1.value == '') {
		count -= 1;
	}
	if (myform.tripid2.value == '') {
		count -= 1;
	}
	if (myform.tripid3.value == '') {
		count -= 1;
	}
	if (myform.tripid4.value == '') {
		count -= 1;
	}
	if (myform.tripid5.value == '') {
		count -= 1;
	}
	if (myform.tripid6.value == '') {
		count -= 1;
	}
	if (myform.tripid7.value == '') {
		count -= 1;
	}
	if (myform.tripid8.value == '') {
		count -= 1;
	}
	if (myform.tripid9.value == '') {
		count -= 1;
	}
	if (myform.tripid10.value == '') {
		count -= 1;
	}
	/*if (count < 2) {
		alert('Please select at least 2 trips to compare.');
	} else {*/
//	alert('linking...');
//	alert('pre email');

//document.getElementById('offer_frame').src='/search/offer.asp?tripid1=' + myform.tripid1.value + '&tripid2=' + myform.tripid2.value + '&tripid3=' + myform.tripid3.value + '&tripid4=' + myform.tripid4.value + '&tripid5=' + myform.tripid5.value + '&tripid6=' + myform.tripid6.value + '&tripid7=' + myform.tripid7.value + '&tripid8=' + myform.tripid8.value + '&tripid9=' + myform.tripid9.value + '&tripid10=' + myform.tripid10.value;
//		alert('/search/offer.asp?tripid1=' + myform.tripid1.value + '&tripid2=' + myform.tripid2.value + '&tripid3=' + myform.tripid3.value + '&tripid4=' + myform.tripid4.value + '&tripid5=' + myform.tripid5.value + '&tripid6=' + myform.tripid6.value + '&tripid7=' + myform.tripid7.value + '&tripid8=' + myform.tripid8.value + '&tripid9=' + myform.tripid9.value + '&tripid10=' + myform.tripid10.value, "offer_link");//, "location=no,menubar=no,status=no,scrollbars=no,resizable=no,width=200,height=25");
//alert('pre window');
window.open('/search/offer2.asp?tripid1=' + myform.tripid1.value + '&tripid2=' + myform.tripid2.value + '&tripid3=' + myform.tripid3.value + '&tripid4=' + myform.tripid4.value + '&tripid5=' + myform.tripid5.value + '&tripid6=' + myform.tripid6.value + '&tripid7=' + myform.tripid7.value + '&tripid8=' + myform.tripid8.value + '&tripid9=' + myform.tripid9.value + '&tripid10=' + myform.tripid10.value);
//}
//	alert('post window');
}

function SetAllCheckBoxes(FormName, FieldName, CheckValue)
{
	if(!document.forms[FormName])
	return;
	var objCheckBoxes = document.forms[FormName].elements[FieldName];
	if(!objCheckBoxes)
		return;
	var countCheckBoxes = objCheckBoxes.length;
	if(!countCheckBoxes)
		objCheckBoxes.checked = CheckValue;
	else
		// set the check value for all check boxes
		for(var i = 0; i < countCheckBoxes; i++)
			objCheckBoxes[i].checked = CheckValue;
}

function resetcomparetrips(myform)
{
	myform.tripid1.value = '';
	myform.tripid2.value = '';
	myform.tripid3.value = '';
	myform.tripid4.value = '';
	myform.tripid5.value = '';
	myform.tripid6.value = '';
	myform.tripid7.value = '';
	myform.tripid8.value = '';
	myform.tripid9.value = '';
	myform.tripid10.value = '';
	return;
}

function printPage() {
if (window.print) {
agree = confirm('This page is trying to print. \n\nOK to print now?');
if (agree) window.print(); 
   }
}