function populate(obj,obj2,checked) {
	deleteOptions(obj);
	obj.disabled = false;
	
	//obj = prof dropdown
	//obj2 = the input (college dropdown)
	val = obj2.value;
	var newVoid = new Option("--Choose Professor--","",false,false);
	obj.options[obj.options.length] = newVoid;
	//new Option(text,value,defaultSelected,selected)
	for (var i = 1; i < profArray[val].length; i++) {
		if (profArray[val][i] != null) {
			//if they have to go back and change something on the screen, then this will ensure the one they selected is checked
			if (checked) {
				if (checked == i) {
					var newOne = new Option(profArray[val][i],i,false,true);
				} else {
					var newOne = new Option(profArray[val][i],i,false,false);
				}
			} else {
				var newOne = new Option(profArray[val][i],i,false,false);
			}
			obj.options[obj.options.length] = newOne;
		}
	}
}
function deleteOptions(obj) {
	obj.options.length =0;
}