ns4 = (navigator.appName.indexOf("Netscape") >= 0 && parseInt(navigator.appVersion.charAt(0)) == 4) ? true : false; 
ns6 = (navigator.appName.indexOf("Netscape") >= 0 && parseInt(navigator.appVersion.charAt(0)) > 4) ? true : false; 
ie4 = (navigator.appName.indexOf("Explorer") >= 0 && parseInt(navigator.appVersion.charAt(0)) >= 4) ? true : false;
mac = (navigator.userAgent.indexOf("Mac") != -1) ? true : false;
function getWindowHeight() {
	if (ie4) {var sSize = document.body.clientHeight; return sSize;}
	else if (ns6) {var sSize = window.innerHeight+5; return sSize;}
	else {var sSize = window.innerHeight; return sSize;}
	return;
}
function getWindowWidth() {
	if (ie4) {var sSize = document.body.clientWidth; return sSize;}
	else if (ns6) {var sSize = document.body.clientWidth; return sSize;}
	else {var sSize = window.innerWidth; return sSize;}
	return;      
}
function findObj(n, d) {
	var p,i,x;
	if(!d) d=document;
	if((p=n.indexOf("?"))>0&&parent.frames.length) {
		d=parent.frames[n.substring(p+1)].document;
		n=n.substring(0,p);
		}
	if(!(x=d[n])&&d.all) x=d.all[n];
	for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
	for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document);
	return x;
}
function preloadImages() {
	var d=document;
	if(d.images){
		if(!d.p) d.p=new Array();
	    var i,j=d.p.length,a=preloadImages.arguments;
		for(i=0; i<a.length; i++)
		if (a[i].indexOf("#")!=0){
			d.p[j]=new Image;
			d.p[j++].src=a[i];
		}
	}
}
function swapImage() {
	var i,j=0,x,a=swapImage.arguments;
	document.sr=new Array;
	for(i=0;i<(a.length-2);i+=3)
	if ((x=findObj(a[i]))!=null){
		document.sr[j++]=x;
		if(!x.oSrc) x.oSrc=x.src;
		x.src=a[i+2];
	}
}
function swapImgRestore() {
	var i,x,a=document.sr;
	for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function preLoader() {
	preloadImages(
		'images/home_mo.jpg',
		'images/fully_managed_mo.jpg',
		'images/faq_mo.jpg',
		'images/features_mo.jpg',
		'images/pricing_mo.jpg',
		'images/bulletin_mo.jpg',
		'images/company_mo.jpg'
	);
}