blnpreload = false;

var options = ["even", "uneven"];

var off = [options];
off["even"] = new Image();
off["uneven"] = new Image();
off["even"].src = "../_images/vinyl-windows-sight-line-even.jpg";
off["uneven"].src = "../_images/vinyl-windows-sight-line-uneven.jpg";

var on = [options];
on["even"] = new Image();
on["uneven"] = new Image();
on["even"].src = "../_images/vinyl-windows-sight-line-even_on.jpg";
on["uneven"].src = "../_images/vinyl-windows-sight-line-uneven_on.jpg";

blnpreload = true;

function guidelinesOn() {
	if (blnpreload) {
		getObject("img_even").src = on["even"].src;
		getObject("img_uneven").src = on["uneven"].src;
		getObject("guidelines").innerHTML = '<a href="even-sight-line.aspx" onclick="javascript:guidelinesOff();return false;">Click here to turn off sight line guidelines.</a>';
	}
}

function guidelinesOff(image,imagename) {
	if (blnpreload) {
		getObject("img_even").src = off["even"].src;
		getObject("img_uneven").src = off["uneven"].src;
		getObject("guidelines").innerHTML = '<a href="even-sight-line-on.aspx" onclick="javascript:guidelinesOn();return false;">Click here to turn on sight line guidelines.</a>';
	}
}