function isFilled(field){
	var filled = false;
  		for(i=0;i<field.length;i++){
	  	    if ((field[i].type == 'checkbox')||(field[i].type == 'radio')){
   			  if (field[i].checked) filled = true
	   		}else{
		  	  if (field[i].value!="") filled=true
		  	}
          }
	  	return (filled);
  	}
	
function isEmail(field) {
	for (i=0;i<field.length;i++){
		     if (!((field[0].value.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)||(field[0].value==""))){
		        return (i);
		        break;
		     }
		}
		return true;
	}
 
function isDigits(field)	{
 	var d = /^(\$?\d+\$?|\$?\d+\.\d+\$?|\€?\d+\€?|\€?\d+\.\d+\€?)$/;
	    for (i=0;i<field.length;i++){
		     if (!(d.test(field[i].value)||field[i].value=="")){
		        return (i);
		        break;
		     }
		}
		return true;
	}
	
var isNN = (navigator.appName.indexOf("Netscape")!=-1);

function autoTab(input,len, e) {
	var keyCode = (isNN) ? e.which : e.keyCode; 
  	var filter = (isNN) ? [0,8,9] : [0,8,9,16,17,18,37,38,39,40,46];
  	if(input.value.length >= len && !containsElement(filter,keyCode)) {
    input.value = input.value.slice(0, len);
    input.form[(getIndex(input)+1) % input.form.length].focus();
  	}

function containsElement(arr, ele) {
    var found = false, index = 0;
    while(!found && index < arr.length)
    if(arr[index] == ele)
    found = true;
    else
    index++;
    return found;
}

function getIndex(input) {
    var index = -1, i = 0, found = false;
    while (i < input.form.length && index == -1)
    if (input.form[i] == input)index = i;
    else i++;
    return index;
  }
  return true;
}