if(document.images)
{
	navimage_1_off = new Image();	navimage_1_off.src="/images/navigation/virtual_fax_off.jpg";
	navimage_1_on = new Image();	navimage_1_on.src="/images/navigation/virtual_fax_on.jpg";
	
	navimage_2_off = new Image();	navimage_2_off.src="/images/navigation/mobile_visual_voicemail_off.jpg";
	navimage_2_on = new Image();	navimage_2_on.src="/images/navigation/mobile_visual_voicemail_on.jpg";
	
	navimage_3_off = new Image();	navimage_3_off.src="/images/navigation/internet_answering_machine_off.jpg";
	navimage_3_on = new Image();	navimage_3_on.src="/images/navigation/internet_answering_machine_on.jpg";
	
	navimage_4_off = new Image();	navimage_4_off.src="/images/navigation/widget_gallery_off.jpg";
	navimage_4_on = new Image();	navimage_4_on.src="/images/navigation/widget_gallery_on.jpg";
	
}

function imageRoll(picName)
{
	if(document.images)
	{
		for(i = 1; i <= 4; i++) {
			picState = (picName == i) ? 'on' : 'off';
			document.images['navimage_' + i].src = eval('navimage_' + i + '_' + picState + '.src');
		}
	}
}

function contentDisplay(panel) {
	objDefault = document.getElementById('default_content');
	objVF = document.getElementById('content_virtual_fax');
	objMVV = document.getElementById('content_mobile_visual_voicemail');
	objIAM = document.getElementById('content_internet_answering_machine');
	objWG = document.getElementById('content_widget_gallery');
	
	objDefault.style.display = (panel == '') ? '' : 'none';
	objVF.style.display = (panel == 'content_virtual_fax') ? '' : 'none';
	objMVV.style.display = (panel == 'content_mobile_visual_voicemail') ? '' : 'none';
	objIAM.style.display = (panel == 'content_internet_answering_machine') ? '' : 'none';
	objWG.style.display = (panel == 'content_widget_gallery') ? '' : 'none';
}