function checkAllFilled(){
	var checkBoxChecked;
	var formSubmitten = true;
	for(var i=0; i<checkItems.length; i++){
		elem = eval("document.sollicitatie."+checkItems[i]);
		if(elem.options && elem.options.length > 0){
			if(elem.selectedIndex == 0){
				elem.style.backgroundColor = '#FF9999';
				formSubmitten = false;
			}
			else{
				elem.style.backgroundColor = '#FFFFFF';
			}	
		}
		else if(elem.length && elem.length > 0){
			/*radiobutton afhandeling*/
			checkBoxChecked = false;
			for(var j=0; j<elem.length;j++){
				if(elem[j].checked){
					checkBoxChecked = true;
				}
			}
			if(checkBoxChecked == false){
				elem[(j-1)].style.backgroundColor = '#FF9999';
				formSubmitten = false;
			}	
			else{
				elem[(j-1)].style.backgroundColor = '#FFFFFF';
			}				
		}
		else {
			elemvalue = elem.value;
			elemname = elem.name;
			if(elemvalue.length == 0){
				elem.style.backgroundColor = '#FF9999';
				formSubmitten = false; 
			}
			else{
				elem.style.backgroundColor = '#FFFFFF';
			}	
		}
	}
	if(formSubmitten != false){
		document.sollicitatie.submit();
		submitDone = true;
	}
	else {
		alert('De rood gekleurde velden behoeven nog aandacht');
	}
}