// Browser Detection
	browser_name = navigator.appName;
	browser_version = parseFloat(navigator.appVersion); 
	if (browser_name == "Netscape" && browser_version >= 3.0) 
	{ 
		roll = 'true'; 
	}
	else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 4.0) 
	{
		roll = 'true'; 
	}
	else 
	{ 
		roll = 'false'; 
	}

	// Preload images, if browser supports mouseovers
	if (roll == 'true') 
	{
		var imglist = new Array ("art/b_cal_dn.jpg", "art/b_cal_up.jpg", "art/b_cont_dn.jpg", "art/b_cont_up.jpg", "art/b_cproj_dn.jpg", "art/b_cproj_up.jpg", "art/b_front_dn.jpg", "art/b_front_up.jpg", "art/b_hist_dn.jpg", "art/b_hist_up.jpg", "art/b_idea_dn.jpg", "art/b_idea_up.jpg", "art/b_inter_dn.jpg", "art/b_inter_up.jpg", "art/b_mem_dn.jpg", "art/b_mem_up.jpg", "art/b_pics_dn.jpg", "art/b_pics_up.jpg", "art/b_pproj_dn.jpg", "art/b_pproj_up.jpg");
		var imgs = new Array();
		var count;
		
		if (document.images)
			for (count=0; count<imglist.length; count++)
			{
				imgs[count]=new Image(); 
				imgs[count].src=imglist[count];
			}
	}

function msover2(img1,ref1)
{ 
	if (roll == 'true')
	{ 
		document.images[img1].src = ref1; 
		
	} 
}

function msout2(img1,ref1)
{ 
	if (roll == 'true')
	{ 
		document.images[img1].src = ref1; 
	} 
}