function showHide(theLayer){
	if (document.getElementById(theLayer).style.display =='block') {
		document.getElementById(theLayer).style.display='none';
	} else {
		document.getElementById(theLayer).style.display='block';
	}
	//alert(document.getElementById(theLayer).style.display);
}

function isEmptyOrWhitespace (s) { 
	var i;
    var whitespace = " \t\n\r";  
    function isEmpty(s) {return ((s == null) || (s.length == 0))}
    if (isEmpty(s)){return true;}
    for(i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (whitespace.indexOf(c) == -1) return false;
    }
    return true;
}

function checkChoose() {
    var status
    Q1=document.getElementById("q1").value;
    Q2=document.getElementById("q2").value;
    Q3=document.getElementById("q3").value;
    Q4=document.getElementById("q4").value;
    Q5=document.getElementById("q5").value;
    for (i=1;i<=5;i++){
        r=isEmptyOrWhitespace(eval("Q"+i));
        if (r == true) {


            $('<div id="dialog">Please answer all questions.</div>').appendTo('body');
            $("#dialog").dialog({
                title: "Please complete missing information.",
                width: 420,
                modal: true,
                close: function (event, ui) { $("#dialog").remove(); },
                buttons: { Ok: function () { $(this).dialog("close"); } }
            });


            //  alert("Please answer all questions.");
          return false;
         } else {
            status = true;
        }
        }
    if (status) {
        // hide form
        document.getElementById("questions").style.display='none';
        document.getElementById("startingInstructions").style.display='none';

        // show answers
        showHide('resultsInstructions');
        if(Q1 == '3 or less' && Q2=='No' && Q3=='No'&& Q4=='No' && Q5=='No') {showHide('choose1');}
        
        if(Q1 == '4 or more' && Q2=='No' && Q3=='No'&& Q4=='No' && Q5=='No') {showHide('choose2');showHide('choose9');}
        
        if(Q1 == '4 or more' && (Q2=='Yes' || Q3=='Yes' || Q4=='Yes' || Q5=='Yes')) {
            showHide('choose2');
            if(Q2=='Yes'){
                showHide('choose4');
            }
            if(Q3=='Yes'){
                showHide('choose5');
            }
            if(Q4=='Yes'){
                showHide('choose6');
            }
            if(Q5=='Yes'){
                showHide('choose7');
            }
            showHide('choose9');
        }
        if(Q1 == '3 or less' && (Q2=='Yes' || Q3=='Yes' || Q4=='Yes' || Q5=='Yes')) {
            showHide('choose3');
            if(Q2=='Yes'){
                showHide('choose4');
            }
            if(Q3=='Yes'){
                showHide('choose5');
            }
            if(Q4=='Yes'){
                showHide('choose6');
            }
            if(Q5=='Yes'){
                showHide('choose7');
            }
            showHide('choose9');
        }
    }
}