var val;

function OverGlobalNav(obj, img){
	if (val!=null)
		document.getElementById(val).style.visibility='hidden';
	obj.src='http://www.msabruins.org/images/NAV_Buttons/h1_'+ img +'.jpg';
	document.getElementById(img+"subnav").style.visibility="visible";
	val = img+"subnav";	
}

function OutGlobalNav(obj, img){
	obj.src='http://www.msabruins.org/images/NAV_Buttons/'+ img +'.jpg';
}

function closesubnav(event){
	if ((event.clientY <100)||(event.clientY > 250)){
		document.getElementById("homesubnav").style.visibility='hidden';document.getElementById("home").src='http://www.msabruins.org/images/NAV_Buttons/'+ 'home' +'.jpg';document.getElementById("aboutussubnav").style.visibility='hidden';document.getElementById("aboutus").src='http://www.msabruins.org/images/NAV_Buttons/'+ 'aboutus' +'.jpg';document.getElementById("calendarsubnav").style.visibility='hidden';document.getElementById("calendar").src='http://www.msabruins.org/images/NAV_Buttons/'+ 'calendar' +'.jpg';document.getElementById("projectssubnav").style.visibility='hidden';document.getElementById("projects").src='http://www.msabruins.org/images/NAV_Buttons/'+ 'projects' +'.jpg';document.getElementById("multimediasubnav").style.visibility='hidden';document.getElementById("multimedia").src='http://www.msabruins.org/images/NAV_Buttons/'+ 'multimedia' +'.jpg';document.getElementById("alumnisubnav").style.visibility='hidden';document.getElementById("alumni").src='http://www.msabruins.org/images/NAV_Buttons/'+ 'alumni' +'.jpg';document.getElementById("contactussubnav").style.visibility='hidden';document.getElementById("contactus").src='http://www.msabruins.org/images/NAV_Buttons/'+ 'contactus' +'.jpg';	}
}