function delFile(form,target){

	if (document.forms[form][target].checked ){

		document.forms[form][target].checked = false; 
		}
	else{
		document.forms[form][target].checked = true; 
		}
}

function inpFocus(obj, stdText) {
  if (obj.value == stdText) {
     obj.value = '';
  }
}

function inpBlur(obj, stdText) {
  if (obj.value == '') {
     obj.value = stdText;
  }
}

function showOnly(showId, parentId, tagName) {
                var parObj = document.getElementById(parentId);
                var tagType = "class";
                if (tagName) {
                    tagType = tagName.toUpperCase();
                }
                if (parObj) {
                    var children = parObj.childNodes;
                    // alert(db_DumpTree(children, ''));
                    for(c = 0; c < children.length; c++) {
                        if (children[c].nodeName == tagType ) {
// alert(children[c].id + " "+ children[c].style.display);
                            if (children[c].id == showId) {
if (children[c].style.display == "none") {
                                children[c].style.display = 'block';
} else {
                               children[c].style.display = 'none';
}
                            } else {
                                children[c].style.display = 'none';
                            }
                        }
                    }
                }
            }


function limiet(veld, maximum, telveld){   
  if (veld.value.length > maximum) {
     veld.value = veld.value.substring(0, maximum);   
   } else {
     var myfield = document.getElementById(telveld);
      if (myfield) {
          myfield.innerHTML = (maximum - veld.value.length);
      }
  }
}