// browser & platform sniffer
var isIE = (document.all) ? 1 : 0;
var isNS = (document.layers) ? 1 : 0;
var isDOM = (document.getElementById) ? 1 : 0;
var isMac = (navigator.userAgent.indexOf("Mac") != -1) ? 1 : 0;
var isWin = (navigator.userAgent.indexOf("Win") != -1) ? 1 : 0;


// write stylesheet
var fontSize = (isIE) ? "xx-small" : "x-small";
document.writeln('<STY'+'LE>');
document.writeln('A { font-weight: bold; color: #669966; text-decoration: none; }');
document.writeln('A:hover { text-decoration: underline; }');
document.writeln('A.nav { color: #FFFFFF; }');
document.writeln('TD, BODY { font-family: Verdana, Geneva, Arial, Helvetica, sans-serif; font-size: '+fontSize+';}');
document.writeln('.nav { font-weight: bold; color: #99CCFF; }');
document.writeln('TABLE.bordered { border: 1px solid #003366; padding: 3px; width: 383px; }');
document.writeln('</STY'+'LE>');


// clikker function
function clikker(a,b) {
	if (a.style.display == '') {
		a.style.display = 'none';
		b.src = '../images/box_arrow.gif';
	} else {
		a.style.display = '';
		b.src = '../images/box_arrow_down.gif';
	}
}

// clikker function for case_studies
function clikker2(a,b) {
	if (a.style.display == '') {
		a.style.display = 'none';
		b.src = '../images/box_arrow.gif';
	} else {
		a.style.display = '';
		b.src = '../images/box_arrow_down.gif';
	}
}

// clikker function for manage.htm (text div only)
function clikker3(a) {
	if (a.style.display == '') {
		a.style.display = 'none';
	} else {
		a.style.display = '';
	}
}

// clikker function for root pages
function clikker4(a,b) {
	if (a.style.display == '') {
		a.style.display = 'none';
		b.src = 'images/box_arrow.gif';
	} else {
		a.style.display = '';
		b.src = 'images/box_arrow_down.gif';
	}
}

// code for preloading images
function preLoadImages(dirs,imageList) {
	var preLoadArray = new Array();
	var total = imageList.length-1;
	
	for (i = 0; i <= total; i++) {
		imgPath = (dirs + imageList[i]);
		// preload images
		preLoadArray[i] = new Image();
		preLoadArray[i].src = imgPath;
	}
}