var iDelay = 4000;
var iIndex2 = 0;

var sImages2 = new Array( );

sImages2[0] = "polyurethane-dispersion/header4.jpg";
sImages2[1] = "polyurethane-dispersion/header6.jpg";
sImages2[2] = "polyurethane-dispersion/header5.jpg";

var sPreloadImages = new Array();

for (var n2 = 0; n2 < sImages2.length; n2 ++)
{
	sPreloadImages[n2] = new Image();
	sPreloadImages[n2].src = sImages2[n2];
}

function changeImage( )
{
	iIndex2 ++;

	if (iIndex2 == sImages2.length)
		iIndex2 = 0;

	document.images.headerPic.src = sImages2[iIndex2];
}

setInterval("changeImage( )", iDelay);