var num=1
img1 = new Image ()
img1.src = "images/kitchen.gif"
img2 = new Image ()
img2.src = "images/bath.gif"
img3 = new Image ()
img3.src = "images/kitch.gif"
img4 = new Image ()
img4.src = "images/bathroom.gif"

function pic1()
{
num=1
document.large.src=eval("img"+num+".src")
}

function pic2()
{
num=2
document.large.src=eval("img"+num+".src")
}

function pic3()
{
num=3
document.large.src=eval("img"+num+".src")
}

function pic4()
{
num=4
document.large.src=eval("img"+num+".src")
}