function stringEmpty(inputstring){if((inputstring==null)||(inputstring=="")){return true;}
return false;}
function checkemail(obj){if(obj){tst=/^[A-Z]([A-Z0-9_.-])*@([A-Z0-9-]+\.)*[A-Z0-9]([A-Z0-9-]+\.)([A-Z]{2,6})$/i;if(!tst.test(obj.value)&&(obj.value!='')){alert(obj.name+" is niet geldig");obj.focus();return false;}}
return true;}
function checkemailwithoutalert(obj){if(obj){tst=/^[A-Z]([A-Z0-9_.-])*@([A-Z0-9-]+\.)*[A-Z0-9]([A-Z0-9-]+\.)([A-Z]{2,6})$/i;if(!tst.test(obj.value)&&(obj.value!='')){return false;}}
return true;}
function RequiredStandardForm(formName){if(document.forms[formName].verplicht){strVerplicht=document.forms[formName].verplicht.value;var Listname=strVerplicht.replace(/\s/g,'');var arListname=Listname.split(",");return Required(arListname,formName);}else{return true;}}
function MakeFieldNameReadable(lEl){var strReturn;if(lEl.getAttribute('alt')){strReturn=lEl.alt;}else{strReturn=lEl.name
while(strReturn.indexOf("_")>0){strReturn=strReturn.replace("_"," ");}}
return strReturn;}
function Required(listname,strFormName){var foutmelding="";for(var i=0;i<listname.length;i++){if(document.forms[strFormName].elements[listname[i]].options){if(document.forms[strFormName].elements[listname[i]].value==''){if(foutmelding==""){document.forms[strFormName].elements[listname[i]].focus();}
foutmelding=foutmelding+"\n- "+MakeFieldNameReadable(document.forms[strFormName].elements[listname[i]]);}}else{if(document.forms[strFormName].elements[listname[i]].length>0){var bChecked=false;for(var j=0;j<document.forms[strFormName].elements[listname[i]].length;j++){if(document.forms[strFormName].elements[listname[i]][j].checked){bChecked=true;}}
if(bChecked==false){if(foutmelding==""){document.forms[strFormName].elements[listname[i]][0].focus();}
foutmelding=foutmelding+"\n- "+MakeFieldNameReadable(document.forms[strFormName].elements[listname[i]][0]);}}else{if(stringEmpty(document.forms[strFormName].elements[listname[i]].value)){if(foutmelding==""){document.forms[strFormName].elements[listname[i]].focus();}
foutmelding=foutmelding+"\n- "+MakeFieldNameReadable(document.forms[strFormName].elements[listname[i]]);}else{if(document.forms[strFormName].elements[listname[i]].onchange){var onch=""+document.forms[strFormName].elements[listname[i]].onchange;if(onch.indexOf("checkemail",0)>1){if(!checkemailwithoutalert(document.forms[strFormName].elements[listname[i]])){if(foutmelding==""){document.forms[strFormName].elements[listname[i]].focus();}
foutmelding=foutmelding+"\n- "+MakeFieldNameReadable(document.forms[strFormName].elements[listname[i]])+" is niet geldig";}}}}}}}
if(foutmelding!=""){foutmelding="U hebt de volgende velden niet correct ingevuld:"+foutmelding;alert(foutmelding);return false;}
return true; doeSend(); }