var nbgroepaantal = 1;
			
			function nbcheckformat(formel,formformat)
			{
				switch(formformat)
				{
					case 'currency':
						if(isNaN(formel.value))
						{
							formel.value = '';
							return false;
						}
						else
						{
							var nbtostring = formel.value.toString();
							var nbcurrency = '';
							for(i=1;i<(Math.floor(nbtostring.length/3)+1);i++)
							{
								j=i*3;
								nbcurrency += '.'+nbtostring.substring(nbtostring.length-j,nbtostring.length-j+3);
							}
							formel.value = nbtostring.substring(0,nbtostring.length-(Math.floor(nbtostring.length/3)*3) ) +''+ nbcurrency;
							return true;
						}
					break;
					case 'e-mail':
						if(formel.value.length < 6 || 
							formel.value.indexOf("@",0) == - 1 || 
							formel.value.indexOf(".",0) == - 1)
						{
							return false;
						}
						else
						{
							return true;
						}
					break;
					case 'akkoord':
						if(formel.value!='akkoord')
						{
							return false;
						}
						else
						{
							return true;
						}
					break;
					case 'nummer':
						if(isNaN(formel.value))
						{
							return false;
						}
						else
						{
							return true;
						}
					break;
					case 'postcode':
						var cijfers = new Number(formel.value.substr(0,4));
						if(isNaN(cijfers) || formel.value.length != 6 || !isNaN(formel.value.substr(3,2)))
						{
							return false;
						}
						else
						{
							return true;
						}
					break;
					case 'datum':
						var cijfers1 = new Number(formel.value.substr(0,2));
						var cijfers2 = new Number(formel.value.substr(3,2));
						var cijfers3 = new Number(formel.value.substr(6,4));
						if(isNaN(cijfers1) || formel.value.length != 10 || isNaN(cijfers2) || isNaN(cijfers3))
						{
							return false;
						}
						else
						{
							return true;
						}
					break;
					case 'datum-vandaag':
						var datumobj = new Date();
						var vandaagdag = datumobj.getDate();
						if(datumobj.getDate() < 10) vandaagdag = '0' + datumobj.getDate();
						var vandaagmaand = datumobj.getMonth() + 1;
						if(vandaagmaand < 10) vandaagmaand = '0' + vandaagmaand;
						var datumcomp = vandaagdag + '-' + vandaagmaand + '-' + datumobj.getFullYear();
						
						if(datumcomp != formel.value)
						{
							//alert(datumcomp);
							return false;
						}
						else
						{
							return true;
						}
					break;
					case 'telefoon':
						var telefoonreeks = formel.value.split('-');
						var lengtereeks = telefoonreeks[0] + telefoonreeks[1];
						
						var cijfers1 = new Number(telefoonreeks[0]);
						var cijfers2 = new Number(telefoonreeks[1]);

						if(isNaN(cijfers1) || isNaN(cijfers2) || lengtereeks.length != 10)
						{
							return false;
						}
						else
						{
							return true;
						}
					break;
					case 'uppercase':
						formel.value = formel.value.toUpperCase();
						return true;
					break;
					case 'lowercase':
						formel.value = formel.value.toLowerCase();
						return true;
					break;
					case 'no-spaces':
						formel.value = formel.value.replace(/[ ]+/gi,'');
						return true;
				}
				return false;
			}
			
			function nbcheckform(formid)
			{
				if(document.getElementById(formid))
				{
					var nbformid=document.getElementById(formid).elements;
				}
				else
				{
					alert('Het formulier heeft geen id');
					return false;
				}
				var nbfoutmelding='';
				var nbradioapp=1;
				var nbcheckboxapp=1;
				
				for(i=0;i< nbformid.length;i++) // alle elementen aflopen
				{
					var nbchecknietalleenspaties = nbformid[i].value.replace(/ /g,'');
					
					if(nbformid[i].title.indexOf('[') > 0)
					{
						var nbverplichtreeks = nbformid[i].title.split('[');
						var nbverplichtveld = nbverplichtreeks[1];
						nbverplichtveld = nbverplichtveld.replace(/[ ]+/gi,'');
						nbverplichtveld = nbverplichtveld.replace(/]/g,'');
						
						if(nbverplichtveld != '')
						{
							var nbverplichtformat = nbverplichtveld.split(',');
						}
						else
						{
							var nbverplichtformat = new Array('','');
						}
						
						if(nbverplichtformat[0]=='required')
						{
							var nbverplichtmarkering=1; // verplicht
							if(nbverplichtformat[1])
							{
								nbverplichtmarkering=2; // verplicht en format
							}
						}
					}
					else
					{
						var nbverplichtmarkering=0; // niet verplicht
					}
					
					if(nbverplichtmarkering>0) // als het verplicht is dan controleren
					{
						switch(nbformid[i].type) // het type veld bepalen en de juiste verwerking
						{
							case 'radio':	
								if(eval(nbradioapp))
								{
									var nbgroepnaam = nbformid[i].name;
									var nbradiogroep = nbformid[nbgroepnaam];							
									var nbgroepcheck = false;
									for(j=0;j< nbradiogroep.length;j++)
									{
										if(nbradiogroep[j].checked)
										{
											nbgroepcheck = true;
										}
									}
									if(!nbgroepcheck)
									{
										nbfoutmelding += '\t- '+ nbverplichtreeks[0] +'\n';
									}
									nbradioapp = 'nbformid[i].name!=\''+nbgroepnaam+'\'';
								}
							break;
							case 'checkbox':
								if(nbverplichtformat[1].indexOf('groep') == -1)
								{
									if(!nbformid[i].checked)
									{
										nbfoutmelding += '\t- '+ nbverplichtreeks[0] +'\n';
									}
								}
								else
								{
									var checkboxreeks = nbverplichtformat[1].split(':');
									
									if(eval(nbcheckboxapp))
									{
										var objidreeks = checkboxreeks[2].split('-');
										var checkedgroep = 0;
								
										for(ci=0;ci < objidreeks.length;ci++)
										{
											var objid = checkboxreeks[1] + '' + objidreeks[ci];
											if(document.getElementById(objid).checked == true)
											{
												checkedgroep++;
											}
										}
										
										//alert('Groep aantal: ' + nbgroepaantal + ' Gekozen aantal: ' + checkedgroep);
										
										if(checkedgroep < (0 + nbgroepaantal))
										{
											nbfoutmelding += '\t- '+ nbverplichtreeks[0] +'\n';
										}
										nbcheckboxapp = ' nbverplichtreeks[0] !=\''+ nbverplichtreeks[0] +'\'';
									}
								}
							break;
							case 'text':
								var nbchecked = true;
								if(nbverplichtmarkering==2)
									nbchecked = nbcheckformat(nbformid[i],nbverplichtformat[1]);

								if(nbformid[i].value=='' || (!nbchecked && nbformid[i].value!='') || nbchecknietalleenspaties == '')
									nbfoutmelding += '\t- '+ nbverplichtreeks[0] +'\n';
							break;
							case 'textarea':
								if(nbformid[i].value=='' || nbchecknietalleenspaties == '') 
									nbfoutmelding += '\t- '+ nbverplichtreeks[0] +'\n';
							break;
							case 'password':
								if(nbformid[i].value=='' || nbchecknietalleenspaties == '' || nbformid[i].value.length < 6) 
									nbfoutmelding += '\t- '+ nbverplichtreeks[0] +'\n';
							break;
							case 'select-one':
								if(nbformid[i].value=='') 
									nbfoutmelding += '\t- '+ nbverplichtreeks[0] +'\n';
							break;
							case 'select-multiple':
								if(nbformid[i].value=='')
									nbfoutmelding += '\t- '+ nbverplichtreeks[0] +'\n';
						}
					}					
				}
				
				if(nbfoutmelding!=''){
					nbfoutmelding = 'Warning: the following fields aren\'t (correctly) submitted.\n\n\n'+ nbfoutmelding;
					alert(''+ nbfoutmelding +'');
					return false;
				}
				else{
					return true;
				}
			}
			
			function nbverplichtmaken(id,modus,format){
				var obj = document.getElementById(id);
				if(modus == 'verplicht'){
					obj.title += ' [verplicht';
					if(format!='') obj.title += ',  ' + format;
					obj.title += ']';
				}
				else{
					var nieuwetitelreeks = obj.title.split('[');
					obj.title = nieuwetitelreeks[0];
				}
			}
			
			function nbactiveerformulier(){
				for(var i=0;i< document.forms.length;i++){						
					if(document.forms[i].title){
						if(document.forms[i].title == 'Required'){
							for(var j=0;j< document.forms[i].elements.length;j++){
								if(document.forms[i].elements[j]){
									if(document.forms[i].elements[j].type.toLowerCase() == 'submit'){
										document.forms[i].elements[j].style.display = 'none';
									}
								}
							}
						}
						document.forms[i].innerHTML += '<div style="text-align: right; width: 100%;"><input value="Cancel" name="annuleren" type="button" class="button" onclick="window.history.go(-1)">&nbsp;<input value="Erase" name="legen" type="reset" class="button">&nbsp;<input type="submit" name="Verzenden" value="Send" onclick="return nbcheckform(\''+document.forms[i].name+'\');" class="button">&nbsp;&nbsp;&nbsp;&nbsp;<\/div>';
					}
				}
			}