// JScript File

function checkTextExists(field, friendly)
{
    if(document.getElementById(field))
    {
        var item = document.getElementById(field);
        
        
        if(item.value == "")
        {
            document.getElementById('errors').innerHTML = document.getElementById('errors').innerHTML + "<br>" + friendly;
        }
    }
}

function checkSelectExists(field, friendly)
{
    if(document.getElementById(field))
    {
        var item = document.getElementById(field);
        
        if(item.selectedIndex < 1)
        {
            document.getElementById('errors').innerHTML = document.getElementById('errors').innerHTML + "<br>" + friendly;
        }
    }
}

function checkEmail(field, friendly)
{
    if(document.getElementById(field))
    {

        var item = document.getElementById(field);
        
        var regex = new RegExp(/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/);

        if(regex.test(document.getElementById(field).value) == false)
        {
            document.getElementById('errors').innerHTML = document.getElementById('errors').innerHTML + "<br>" + friendly;
        }
    }
}

function checkNumeric(field, friendly)
{
    if(document.getElementById(field))
    {

        var item = document.getElementById(field);
        
        if(isNaN(item.value) == true)
        {
            document.getElementById('errors').innerHTML = document.getElementById('errors').innerHTML + "<br>" + friendly;
        }
    }
}

function clearErrors()
{
    document.getElementById('errors').innerHTML = "";
}

function CheckFieldLength(fn,wn,rn,mc) 
{
  var len = fn.value.length;
  if (len > mc) {
    fn.value = fn.value.substring(0,mc);
    len = mc;
  }
  
  if(len == 1000)
  {
    document.getElementById('char_errors').style.color = 'red';
  }else{
    document.getElementById('char_errors').style.color = '';
  }
  
  document.getElementById(wn).innerHTML = len;
  document.getElementById(rn).innerHTML = mc - len;
}