var ns = (document.all)?false:true;
var intBack = 1;

//function for dynamically switching the background image
function changeBg(tdId, img) {
	if (ns)
	{
		layerObject = document.getElementById(tdId).style;
	} 
	else 
	{
		layerObject = eval(tdId + ".style");
	}
	if(img=="show")
		layerObject.backgroundImage = 'url(/skin1/images/nav-bg-roll-over.png)';
	if(img=="hide")
		layerObject.backgroundImage = ''; 
}

function button_on(element_id, div_id, num)
{	
	document.getElementById(div_id).style.position = "absolute";
	document.getElementById(div_id).style.visibility = "visible";
}

function button_off(element_id, div_id)
{	
	document.getElementById(div_id).style.position = "absolute";
	document.getElementById(div_id).style.visibility = "hidden";
}