function calculate(qid){
	var me=document.forms[0];
	if(qid.checked==true){
		var obj=eval('me.'+qid.name+'_points');
		obj.value=qid.value;
	}else{
	var obj=eval('me.'+qid.name+'_points');
		obj.value=0;
	}
	untick(qid);
}

function untick(qid){
	var ids=new Array("a","b","c","d");
	var me=document.forms[0];
	var id;
	var obj;
	for(var i=0;i<ids.length;i++){
		id=qid.name+ids[i];
		if(id!=qid.id){
			obj=eval('me.'+id);
			obj.checked=false;
		}
	}
	
	calculate2();
}
function calculate2(){
	var skill=0;
	var obj;
	var me=document.forms[0];	
	for(var i=1;i<=6;i++){
		skill+=parseInt(eval('me.q'+i+'_points.value'),10);
	}
	
	var t=document.getElementById('totalscore');
	t.innerHTML=skill;
	me.score.value=skill;
	if(skill<=9){
		toggleLayer('a3day');
	}else if(skill<=14){
		toggleLayer('a4day');
	}else if(skill<=18){
		toggleLayer('a5day');
	}else if(skill<=21){
		toggleLayer('a6day');
	}else if(skill<=24){
		toggleLayer('a7day');
	}else{
		toggleLayer('a8day');
	}

}
var toggled=false;
function toggleLayer(whichLayer){
	var style2;
	//hide all arrows
	for(var i=3;i<=8;i++){
		style2=eval("document.getElementById('a"+i+"day').style");
		style2.display="";
	}
	
	//display arrow
	if (document.getElementById){
		// this is the way the standards work
		var style2 = document.getElementById(whichLayer).style;
		style2.display = "block";
	}else if (document.all){
		// this is the way old msie versions work
		var style2 = document.all[whichLayer].style;
		style2.display = "block";
	}else if (document.layers){
		// this is the way nn4 works
		var style2 = document.layers[whichLayer].style;
		style2.display = "block";
	}
}

function getQ(id){
	var style2;
	//hide all layers
	for(var i=1;i<=6;i++){
		style2=eval("document.getElementById('question"+i+"').style");
			style2.display="";
	}
	//show what we want
	style2=eval("document.getElementById('question"+id+"').style");
	style2.display="block";
}

function chooseCourse(){
if(self.opener.document.forms[0]){
	var you=self.opener.document.forms[0];
	var me=document.forms[0];
	//check correct course radio button
	if(me.score.value<=14){
		you.course[0].checked=true;
	}else if(me.score.value<=21){
		you.course[1].checked=true;
	}else{
		you.course[2].checked=true;
	}
}
window.close();
}
function setup(){
//var obj=document.getElementById('question1');
//obj.style.display="block";
getQ(1);
}