/** function to show process in progress
**/
function showLoadingImage(id) 
{
	var imageUrl = "<img src='" + imagePath + "/loading_circle_orange.gif' />";
	document.getElementById(id).innerHTML = imageUrl;
}
function hideLoadingImage(id) 
{	
	var imageUrl = "&nbsp;";
	document.getElementById(id).innerHTML = imageUrl;
}
function showLoadingImageCalculator(id) 
{
	var imageUrl = "<img src='" + imagePath + "/loading_circle_orange_black.gif' />";
	document.getElementById(id).innerHTML = imageUrl;
}
function hideLoadingImageCalculator(id) 
{	
	var imageUrl = "&nbsp;";
	document.getElementById(id).innerHTML = imageUrl;
}