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;
}

function getElementValue( ElementID )
{
	var objElement = document.getElementById( ElementID )

	return objElement.value
}

function doSubmit( value )
{
	frmObj.frm_submit.value = value;

	ShowSubmit();

	frmObj.submit();
}


function ShowSubmit()
{
	var label = top.document.getElementById('submitbox');
	var extraSpace;
	var maxWidth = 1000;

	if (label.style.visibility != 'visible')
	{
		var labelText = top.document.getElementById('submitlabelText');

		labelText.innerHTML = "Bezig met verwerken...";

		if (top.document.body.offsetWidth > maxWidth)
		{
			extraSpace = (top.document.body.offsetWidth  - maxWidth) / 2;
		}
		else
			extraSpace = 0;

		extraSpace = extraSpace + 8

		label.style.left = (top.document.body.offsetLeft + extraSpace);
		label.style.top = (top.document.body.offsetTop + 3);

		label.style.visibility = 'visible';
	}
}

function removeSubmit()
{
	var label = top.document.getElementById('submitbox');

	if (label.style.visibility == 'visible')
	{
		label.style.visibility = 'hidden';
	}
}