var defaultTab = 'Features';


function nscrShiftBG(el, evt, shift) {
	if (evt.type == 'mouseover') {
		el.style.backgroundPosition = shift;
	} else {
		el.style.backgroundPosition = '0 0';
	}
}


function nscrSwapSpdIcons(el, evt) {
	var root = el.id.substr(0,el.id.length-2);
	var array = new Array();
	array = ['spdPhoto','spdVideo','spdPod','spdMobile'];
	if (evt && evt.type == 'mouseover') {
		document.getElementById(el.id).style.display = 'none';
		for (var i = 0; i < array.length; i++) {
			document.getElementById(array[i] + 'Lg').style.display = (array[i] == (root)) ? 'block' : 'none';
			document.getElementById(array[i] + 'Sm').style.display = (array[i] == (root)) ? 'none' : 'block';
		}
	} else {
		document.getElementById(root + 'Sm').style.display = 'block';
		document.getElementById(el.id).style.display = 'none';
	}
}