function preloadImages() 
{
//need to preload Images for better effect
var img1 = new Image();
var img2 = new Image();
var img3 = new Image();
var img4 = new Image();
var img5 = new Image();
var img6 = new Image();
var img7 = new Image();
var img8 = new Image();
var img9 = new Image();
var img10 = new Image();
var img11 = new Image();
var img12 = new Image();
img1.src = '/Images/why-vitalz_over.png';
img2.src = '/Images/providers.png';
img3.src = '/Images/physicians_over.png';
img4.src = '/Images/patients_over.png';
img5.src = '/Images/home-provider_over.png';
img6.src = '/Images/home-physician_over.png';
img7.src = '/Images/why-vitalz_out.png';
img8.src = '/Images/providers_out.png';
img9.src = '/Images/physicians_out.png';
img10.src = '/Images/patients_out.png';
img11.src = '/Images/home-provider.jpg';
img12.src = '/Images/home-patient.jpg';
}

function mouseOver1()
{
document.getElementById("nav1").src="Images/why-vitalz_over.png"
}

function mouseOver2()
{
document.getElementById("nav2").src="Images/providers_over.png"
}

function mouseOver3()
{
document.getElementById("nav3").src="Images/physicians_over.png"
}

function mouseOver4()
{
document.getElementById("nav4").src="Images/patients_over.png"
}


function mouseOver5()
{
document.getElementById("home1").src="Images/home-provider-over.jpg"
}

function mouseOver6()
{
document.getElementById("home2").src="Images/home-physician-over.jpg"
}

function mouseOver7()
{
document.getElementById("home3").src="Images/home-patient-over.jpg"
}



function mouseOut1()
{
document.getElementById("nav1").src="Images/why-vitalz_out.png"
}

function mouseOut2()
{
document.getElementById("nav2").src="Images/providers_out.png"
}

function mouseOut3()
{
document.getElementById("nav3").src="Images/physicians_out.png"
}

function mouseOut4()
{
document.getElementById("nav4").src="Images/patients_out.png"
}


function mouseOut5()
{
document.getElementById("home1").src="Images/home-provider.jpg"
}

function mouseOut6()
{
document.getElementById("home2").src="Images/home-physician.jpg"
}

function mouseOut7()
{
document.getElementById("home3").src="Images/home-patient.jpg"
}