function CheckRequiredFields() {

if(
WithoutSelectionValue(document.form1.Q1_How_found_website_Google) &&
WithoutSelectionValue(document.form1.Q1_How_found_website_Yahoo) &&
WithoutSelectionValue(document.form1.Q1_How_found_website_AOL) &&
WithoutSelectionValue(document.form1.Q1_How_found_website_Alta_Vista) &&
WithoutSelectionValue(document.form1.Q1_How_found_website_Other) &&
	WithoutContent(document.form1.Q1_How_found_website_OtherName.value) &&
WithoutCheck(document.form1.Q1_How_found_website_WCRF_literature) &&
WithoutCheck(document.form1.Q1_How_found_website_Other_literature) &&
WithoutCheck(document.form1.Q1_How_found_website_Website_link) &&
WithoutCheck(document.form1.Q1_How_found_website_Recommendation) &&
WithoutCheck(document.form1.Q1_How_found_website_Other_method) &&
	WithoutContent(document.form1.Q1_How_found_website_Other_methodName.value) &&
WithoutCheck(document.form1.Q2_Is_this_first_visit) &&
WithoutCheck(document.form1.Q3_Main_reasons_for_visit_GI_cancer) &&
WithoutCheck(document.form1.Q3_Main_reasons_for_visit_GI_WCRF) &&
WithoutCheck(document.form1.Q3_Main_reasons_for_visit_ExpertReport) &&
WithoutCheck(document.form1.Q3_Main_reasons_for_visit_ResearchGrant) &&
WithoutCheck(document.form1.Q3_Main_reasons_for_visit_Donation) &&
WithoutCheck(document.form1.Q3_Main_reasons_for_visit_Careers) &&
WithoutCheck(document.form1.Q3_Main_reasons_for_visit_Other) &&
	WithoutContent(document.form1.Q3_Main_reasons_for_visit_OtherName.value) &&
WithoutCheck(document.form1.Q4_Did_you_find_info) &&
WithoutCheck(document.form1.Q5_Improve_site) &&
	WithoutContent(document.form1.Q5_Improve_site_how.value) &&
WithoutCheck(document.form1.Q6_Age_range) &&
WithoutCheck(document.form1.Q7_Visitor_type_HealthProfessional) &&
WithoutCheck(document.form1.Q7_Visitor_type_GeneralPublic) &&
WithoutCheck(document.form1.Q7_Visitor_type_WCRFSupporter) &&
WithoutCheck(document.form1.Q7_Visitor_type_Press) &&
WithoutCheck(document.form1.Q7_Visitor_type_Other) &&
	WithoutContent(document.form1.Q7_Visitor_type_OtherName.value)

)	{

errormessage += "\n\nPlease complete our web survey.";

}


if(errormessage.length > 2) {
	alert('NOTE:' + errormessage);
	return false;
	}
return true;
} 

function WithoutContent(ss) {
if(ss.length > 0) { return false; }
return true;
}

function NoneWithContent(ss) {
for(var i = 0; i < ss.length; i++) {
	if(ss[i].value.length > 0) { return false; }
	}
return true;
}

function NoneWithCheck(ss) {
for(var i = 0; i < ss.length; i++) {
	if(ss[i].checked) { return false; }
	}
return true;
}

function WithoutCheck(ss) {
if(ss.checked) { return false; }
return true;
}

function WithoutSelectionValue(ss) {
for(var i = 0; i < ss.length; i++) {
	if(ss[i].selected) {
		if(ss[i].value.length) { return false; }
		}
	}
return true;
}
function isCreditCard( CC ) {                         
if (CC.length > 19)	return (false);
sum = 0; mul = 1; l = CC.length;
for (i = 0; i < l; i++) {
   digit = CC.substring(l-i-1,l-i);
   tproduct = parseInt(digit ,10)*mul;
   if (tproduct >= 10)
		sum += (tproduct % 10) + 1;
   else
		sum += tproduct;
   if (mul == 1)
		mul++;
   else
		mul--;
}
if ((sum % 10) == 0)              
	return (true);
else
   return (false);
}
function DeselectRadio(form){
	for (var i = 0; i < document.form1.Sponsored_Amt.length; i++){
		document.form1.Sponsored_Amt[i].checked = false
	}
}