var randomHeaderImagePages = new Array("index", "faculty", "placement", "group", "koreanstudies", "events", "visitors", "events_2005", "events_2006", "events_2007", "events_2008", "events_2009", "events_2010", "news", "affiliated");

function generateRandomHeaderImage() {
	var uri = getURL(uri);
	//if (uri.page == "index") {
	if (inArray(uri.page, randomHeaderImagePages)) {
		images = new Array(25);
		images[0] = "header1.jpg";
		images[1] = "header2.jpg";
		images[2] = "header3.jpg";
		images[3] = "header4.jpg";
		images[4] = "header5.jpg";
		images[5] = "header6.jpg";
		images[6] = "header7.jpg";
		images[7] = "header8.jpg";
		images[8] = "header9.jpg";
		images[9] = "header10.jpg";
		images[10] = "header11.jpg";
		images[11] = "header12.jpg";
		images[12] = "header13.jpg";
		images[13] = "header14.jpg";
		images[14] = "header15.jpg";
		images[15] = "header16.jpg";
		images[16] = "header17.jpg";
		images[17] = "header18.jpg";
		images[18] = "header19.jpg";
		images[19] = "header20.jpg";
		images[20] = "header21.jpg";
		images[21] = "header22.jpg";
		images[22] = "header23.jpg";
		images[23] = "header24.jpg";
		images[24] = "header25.jpg";
		images[25] = "header26.jpg";
		
		index = Math.floor(Math.random() * images.length);
		
		document.write('<img border="0" src="images/' + images[index] + '" align="right" />');
	}
}

// Current Page Reference
// copyright Stephen Chapman, 1st Jan 2005
// you may copy this function but please keep the copyright notice with it
function getURL() {
	var uri = new Object();
	uri.dir = location.href.substring(0, location.href.lastIndexOf('\/'));
	uri.dom = uri.dir; if (uri.dom.substr(0,7) == 'http:\/\/') uri.dom = uri.dom.substr(7);
	uri.path = ''; var pos = uri.dom.indexOf('\/'); if (pos > -1) {uri.path = uri.dom.substr(pos+1); uri.dom = uri.dom.substr(0,pos);}
	uri.page = location.href.substring(uri.dir.length+1, location.href.length+1);
	pos = uri.page.indexOf('?');if (pos > -1) {uri.page = uri.page.substring(0, pos);}
	pos = uri.page.indexOf('#');if (pos > -1) {uri.page = uri.page.substring(0, pos);}
	uri.ext = ''; pos = uri.page.indexOf('.');if (pos > -1) {uri.ext =uri.page.substring(pos+1); uri.page = uri.page.substr(0,pos);}
	uri.file = uri.page;
	if (uri.ext != '') uri.file += '.' + uri.ext;
	if (uri.file == '') uri.page = 'index';
	uri.args = location.search.substr(1).split("?");
	
	return uri;
}

function inArray(needle, haystack) {
	for (h in haystack) {
		if (haystack[h] == needle) {
			return true;
			// return h;
		}
	}
	
	return false;
}