function checkaq(el)
{		
		var list = document.getElementById("ddl_" + el);
		var spn = document.getElementById("spn_" + el);
		var tda = document.getElementById("tda");
		list.disabled = true; 
		
		if (list.options[list.selectedIndex].value == "0") {
			spn.className = "sf";
			tda.innerHTML= "<span style='background-color:yellow;padding:4px'><b>ERROR...</b> The correct response is: <b>" + list.name + "</b></span>";
		}else{
			spn.className = "sp";
		}
}
function cle()
{
	var tda = document.getElementById("tda");
	tda.innerHTML="";
}
function chk()
{
	for (i=0;i<38;i++) {
		if ( document.getElementById("ddl_" + i) != null){
			var list = document.getElementById("ddl_" + i);
			if (list.disabled==false){
					alert("Please complete this quiz first!")
					return false;
			}
		}
	}
	return true
}