//Preload Images
oHomeImg = new Image();
oCalendarImg = new Image();
oConferencesImg = new Image();
oResearchImg = new Image();
oScholarshipsImg = new Image();
oAlumniImg = new Image();
oLinksImg = new Image();

oContactImg = new Image();
oAmpImg = new Image();
oBridgesImg = new Image();
oMspImg = new Image();
oMarcImg = new Image();
oSssImg = new Image();
oFsmpImg = new Image();
oMbrsImg = new Image();
oMcnairImg = new Image();
oMirtImg = new Image();

function PreloadImgs() {
	oHomeImg.src = "/usp/images/tabs/home_sel.gif";
	oCalendarImg.src = "/usp/images/tabs/calendar_sel.gif";
	oConferencesImg.src = "/usp/images/tabs/conferences_sel.gif";
	oResearchImg.src = "/usp/images/tabs/research_sel.gif";
	oScholarshipsImg.src = "/usp/images/tabs/scholarships_sel.gif";
	oAlumniImg.src = "/usp/images/tabs/alumni_sel.gif";
	oLinksImg.src = "/usp/images/tabs/links_sel.gif";

	oContactImg.src = "/usp/images/lnav/contact_sel.gif";
	oAmpImg.src = "/usp/images/lnav/amp_sel.gif";
	oBridgesImg.src = "/usp/images/lnav/bridges_sel.gif";
	oMspImg.src = "/usp/images/lnav/msp_sel.gif";
	oMarcImg.src = "/usp/images/lnav/marc_sel.gif";
	oSssImg.src = "/usp/images/lnav/sss_sel.gif";
	oFsmpImg.src = "/usp/images/lnav/fsmp_sel.gif";
	oMbrsImg.src = "/usp/images/lnav/mbrs_sel.gif";
	oMcnairImg.src = "/usp/images/lnav/mcnair_sel.gif";
	oMirtImg.src = "/usp/images/lnav/mirt_sel.gif";

	SetPageImg();
}

//Highlight tab of current page
function SetPageImg() {
	if (document.getElementById) {
		switch (page) {
		case "Home":
			document.getElementById("imgHome").src = oHomeImg.src;
			break;
		case "Calendar":
			document.getElementById("imgCalendar").src = oCalendarImg.src;
			break;
		case "Conferences":
			document.getElementById("imgConferences").src = oConferencesImg.src;
			break;
		case "Research":
			document.getElementById("imgResearch").src = oResearchImg.src;
			break;
		case "Scholarships":
			document.getElementById("imgScholarships").src = oScholarshipsImg.src;
			break;
		case "Alumni":
			document.getElementById("imgAlumni").src = oAlumniImg.src;
			break;
		case "Links":
			document.getElementById("imgLinks").src = oLinksImg.src;
			break;
		case "Contact":
			document.getElementById("imgContact").src = oContactImg.src;
			break;
		}
	}
	else {
		switch (page) {
		case "Home":
			document.imgHome.src = oHomeImg.src;
			break;
		case "Calendar":
			document.imgCalendar.src = oCalendarImg.src;
			break;
		case "Conferences":
			document.imgConferences.src = oConferencesImg.src;
			break;
		case "Research":
			document.imgResearch.src = oResearchImg.src;
			break;
		case "Scholarships":
			document.imgScholarships.src = oScholarshipsImg.src;
			break;
		case "Alumni":
			document.imgAlumni.src = oAlumniImg.src;
			break;
		case "Links":
			document.imgLinks.src = oLinksImg.src;
			break;
		case "Contact":
			document.imgContact.src = oContactImg.src;
			break;
		}
	}
}

// highlights the tab that the cursor is over
function HighlightTab(imgName, file) {
	imageForPage = "img" + page;
	obj = eval("document." + imgName);
	if (imageForPage != imgName) {
		obj.src = "/usp/images/tabs/" + file;
	}
}

// highlights the button that the cursor is over
function HighlightBtn(imgName, file) {
	imageForPage = "img" + page;
	obj = eval("document." + imgName);
	if (imageForPage != imgName) {
		obj.src = "/usp/images/lnav/" + file;
	}
}

function ShowDesc(prog) {
	if (document.getElementById) {
		id = "div" + prog;
		if (document.getElementById(id)) {
			document.getElementById(id).style.display = "block";
		}
	}
	else {
		if (document.layers["layProgDesc"]) {
			num = progNum[prog];
			document.layers["layProgDesc"].document.open();
			document.layers["layProgDesc"].document.writeln("<div class='contentHeadline'>" + progDesc[num][0] + "</div>" + progDesc[num][1]);
			document.layers["layProgDesc"].document.close();
			document.layers["layProgDesc"].visibility = "show";
		}
	}
}

function HideDesc(prog) {
	if (document.getElementById) {
		id = "div" + prog;
		if (document.getElementById(id)) {
			document.getElementById(id).style.display = "none";
		}
	}
	else {
		if (document.layers["layProgDesc"]) {
			document.layers["layProgDesc"].visibility = "hide";
			document.layers["layProgDesc"].document.open();
			document.layers["layProgDesc"].document.writeln("");
			document.layers["layProgDesc"].document.close();
		}
	}
}