// JavaScript Document

			var isNS4 = (navigator.appName=="Netscape")?1:0;
			
			function checkRadio(formname, radioname) {
		  var valid = true;
		  var rad_val    = '';
		  for (var i=0; i < eval('document.'+formname+'.'+radioname+'.length'); i++) { //check every radio button by that name
			if (eval('document.'+formname+'.'+radioname+'[i].checked'))  { //if it is checked
			  rad_val += '-';
			  }	else rad_val += '';
			  }
			if (rad_val=='') {
			  valid = false;
			}
		  return valid;
		}

		function validateInput(formName, fieldValue){
			valid=true;	
			if (typeof eval('document.'+formName+'.'+fieldValue+'.length')=='number'){
				if(checkRadio(formName, fieldValue)==false){
					return false;
				}
			}else{
				inputText = eval('document.'+formName+'.'+fieldValue+'.value');
				if(inputText=='') {
					return false;
				}				
			}
			return valid;
		}

		function checkInput(formName){		
			valid=true;
			iEle = document.forms[formName].somQuest.value.split(';');
			for(i=1;i<=iEle;i++){
				fieldValue = 'fs_answer_'+i;
				
				if (eval('document.'+formName+'.fs_answer_'+i)){
					fieldValue = 'fs_answer_'+i;
				}
				if (eval('document.'+formName+'.fds_answer_'+i)){
					fieldValue = 'fds_answer_'+i;
				}

				if(validateInput(formName,fieldValue)==false && valid==true){
					alert("Gelieve alle velden in te vullen");
					return false;
				}else{
					valid=true
				}
					fieldValue = fieldValue.substring(0, fieldValue.length-1);

			}
		return valid;
		}

		function is_int(event){
		  var Key = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
		  if(Key==13 || Key==8 || (Key >= 48 && Key <=57)) return true;
		  else return false;
		}