function clearDropDown(id)
{
	document.getElementById(id).options.length = 0;
}

function addDropDownItem(dd, text, value)
{
	// Create an Option object    
	var opt = document.createElement("option");

	// Set text + value
	opt.text = text;
	opt.value = value;

	// Add an Option object to Drop Down/List Box
	dd.options.add(opt);        // Assign text and value to Option object
}