function checkPreference(){
	var e = ""
	var msg = "";
	
	<!-- Check for Work Authorization -->
	var r = document.application.work_permit;
	for(var i=0;i<r.length;i++){
		if(r[i].checked) { e = ""; break; } else { e = -1;	}
	}
	if(e == -1) {	msg = msg + "Please specify your legality to work in Canada.\n"; }
	
	<!-- Check Job Type -->
	if(document.application.type1.checked || document.application.type2.checked) {
		e = "";
	} else {
		msg = msg + "Please select at least one job type.\n";
	}
	
	<!-- Check Position -->
	if(document.application.position1.checked || document.application.position2.checked || document.application.position3.checked || document.application.position4.checked || document.application.position5.checked || document.application.position6.checked) {
		e = "";
	} else {
		msg = msg + "Please select at least one position.\n";		
	}

	<!-- Check Location -->
	if(document.application.location1.checked || document.application.location2.checked || document.application.location3.checked || document.application.location4.checked || document.application.location5.checked || document.application.location6.checked || document.application.location7.checked || document.application.location8.checked || document.application.location9.checked) {
		e = "";
	} else {
		msg = msg + "Please select at least one location.\n";		
	}
	
	<!-- Check Day Availability -->
	if(document.application.day1.checked || document.application.day2.checked || document.application.day3.checked || document.application.day4.checked || document.application.day5.checked || document.application.day6.checked || document.application.day7.checked) {
		e = "";
	} else {
		msg = msg + "Please select at least one working day.\n";
	}
	
	if(msg) {
		alert(msg);
		return false;
	} else {
		return true;
	}
}