var formvalidated = true;
var alertSingle = false;
var strMultiAlert='';


function RequiredRadioField(fieldname,alerttext) {
    var isChecked=false;
    var objFormRadioField=document.forms[0].elements[fieldname];
    var objFormField = document.getElementsByTagName(fieldname);
    try {
        for(var i = 0; i < objFormRadioField.length; i++) {

            if(objFormRadioField[i].checked) {
	            isChecked=true;
	            break;
            }
        }

        if (!isChecked) {
            objFormRadioField.item(0).parentNode.nextSibling.firstChild.className='CustomFormStarShow';
            if (alertSingle) {
              alert(alerttext);
              formvalidated=false;
            }
            else {
                strMultiAlert += '- ' + alerttext + '\n';
                formvalidated=false;
            }
        }
        else {
            objFormRadioField.item(0).parentNode.nextSibling.firstChild.className='CustomFormStar';
        }
    }
    catch(err) {
            formvalidated=false;
            strMultiAlert += 'error in validatingfunction for radiobox \n' ;
    }
            
}


function RequiredField(fieldname,alerttext) {

    var objFormField = document.getElementById(fieldname);
    try {   
        switch (objFormField.type){
          case "text":
     
                if (objFormField.value.length == 0) {
                  
                    MakeAlert(objFormField,alerttext);
                                    }
                else {
                    removeStar(objFormField);
                }
                break;
          case "textarea":
                if (objFormField.value.length == 0) {
                    
                      MakeAlert(objFormField,alerttext);
                }
                else {
                    removeStar(objFormField);
                }
                break;      
          case "checkbox":
                if (!objFormField.checked) {
              
                    MakeAlert(objFormField,alerttext);
                 }
                 else {
                    removeStar(objFormField);
                }
                break;
          case "select-one":
         
                 if (objFormField.options[0].selected) {
           
                     MakeAlert(objFormField,alerttext);
                 }
                 else {
                    removeStar(objFormField);
                }
                 break;
          }
      }
      catch(err) {
            formvalidated=false;
            strMultiAlert += 'error in validatingfunction for ' + objFormField.type + '\n' ;
      }
     
     
  
}
function RequiredEmailField(fieldname,alerttext) {
    var re = new RegExp("^[0-9a-zA-ZæøåÆØÅ][\\w\\.\\-_æøåÆØÅ]*[a-zA-Z0-9æøåÆØÅ\\.\\-]@[a-zA-Z0-9æøåÆØÅ][\\w\\.\\-_æøåÆØÅ]*[a-zA-Z0-9æøåÆØÅ]\\.[a-zA-ZæøåÆØÅ][a-zA-ZæøåÆØÅ\\.]*[a-zA-Z]$");
    var objEmailField = document.getElementById(fieldname);
    var Fieldvalue=objEmailField.value;
    try {    
        var MatchArr = Fieldvalue.match(re);
   
        if (!re.test(Fieldvalue)) {
           
	        MakeAlert(objEmailField,alerttext);
	    }
	    else {
            removeStar(objEmailField);
        }
    }
    catch(err) {
       formvalidated=false;
       strMultiAlert += 'error in validatingfunction for email! \n';
    }

}

function MakeAlert(objFormField,alerttext) {

    formvalidated=false;
    if (alertSingle) {
          alert(alerttext);
    }
    else {
        strMultiAlert += '- ' + alerttext + '\n';
    }
    
    objFormField.parentNode.nextSibling.firstChild.className='CustomFormStarShow';
    return false;
}

function removeStar(objFormField) {

      objFormField.parentNode.nextSibling.firstChild.className='CustomFormStar';
      return true;
    
}

function addElement() {

var AddTable=document.getElementById('tblAddElement');
var lstElement=document.getElementById('listAddElement');
var numToAdd=lstElement.options[lstElement.selectedIndex].text;
var numRows = AddTable.rows.length; //existing rows
    
    if (numRows < numToAdd) {
    //add rows
        for(var i = numRows; i < numToAdd; i++) {
            var newIndex=i+1;
            
            var row = AddTable.insertRow(i);
            var y=row.insertCell(0);
            var z=row.insertCell(1);
            
            y.innerHTML= newIndex + ". navn: <input name=row" + newIndex + "cell1" + " id=row" + newIndex + "cell1" + " type='text' style='width:250px;' />";
            z.innerHTML="fødselsdato: <input name=row" + newIndex + "cell2" + " id=row" + newIndex + "cell2" + " type='text' style='width:150px;'  />";
                    
        }
    }
    else if(numRows > numToAdd){
    //remove rows
  
        for(var i = numRows; i > numToAdd; i--) {
        
           AddTable.deleteRow(i-1);
        }
    }
}