function ValidateQuestions(source, args)
{
    var hasProblem = false;
    var Message = "";
    for(var i=1; i<=11; i++)
    {
        var question = document.getElementsByName("Question"+i);
        for(var j=0; j<question.length; j++)
            if (question[j].checked) 
                break;
        if (j==question.length)
        {
            //Message +="Please answer question "+i+".<br/>";
            hasProblem=true;
        }
    }
    //var lblMessage= document.getElementById("lblMessage");
    //lblMessage.innerHTML = "<ul><li>" + Message + "</li></ul>";
    args.IsValid = !hasProblem;
}

function setResponseForQuestion4()
{
    var rbQ2A1 = document.getElementById("rbQuestion2a");
    var rbQ2A2 = document.getElementById("rbQuestion2b");
    var question2Answer = 0;
    
    var rbQ4A1 = document.getElementById("rbQuestion4a");
    var rbQ4A2 = document.getElementById("rbQuestion4b");
    var rbQ4A3 = document.getElementById("rbQuestion4c");
    var question4Answer = 0;
    
    if (rbQ2A1.checked) question2Answer = 1;
    if (rbQ2A2.checked) question2Answer = 2;
    
    if (rbQ4A1.checked) question4Answer = 1;
    if (rbQ4A2.checked) question4Answer = 2;
    if (rbQ4A3.checked) question4Answer = 3;
    
    if (question2Answer > 0 && question4Answer > 0)
    {
        var tdQuestion = document.getElementById("TDQ4");
        if (tdQuestion) tdQuestion.style.borderBottom="none";
        var trQuestion = document.getElementById("TRQ4");
        trQuestion.style.display = "inline";
        if (trQuestion) 
        if (BrowserDetect.browser == 'Safari') trQuestion.style.display = "table-row";
        if (BrowserDetect.browser == 'Firefox') trQuestion.style.display = "table-row";
        
        var divResponse = document.getElementById("q2a" + question2Answer);
        if (divResponse)
        {
            var divAnswer = document.getElementById("RQ4");
            if (divAnswer) divAnswer.innerHTML= divResponse.innerHTML;
        }
    }
}

var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();