function disableImportButton(importButtonName, pleaseWaitName, errorMessagesName, progressBarName) {
	
	var importButton = document.getElementById(importButtonName);
	var pleaseWait = document.getElementById(pleaseWaitName);
	var errorMessages = document.getElementById(errorMessagesName);
	var pBar = document.getElementById(progressBarName);

	importButton.style.display='none';
	pleaseWait.style.display='inline';	
	
	if(errorMessages != null)
		errorMessages.style.display='none';		

	pBar.src=pBar.src;
	
	setTimeout('resetGif()', 200);
}

function resetGif(pleaseWait) {
	pleaseWait.innerHTML = pleaseWait.innerHTML;
}