if (document.images) {

	howitworksOn = new Image;

	howitworksOn.src = "images/see_how_it_worksBt_o.gif";


	howitworksOff = new Image;

	howitworksOff.src = "images/see_how_it_worksBt.gif";


}



function chgImg(imgField,newImg) {

	if (document.images) {

		document[imgField].src= eval(newImg + ".src")

	}

}

	

//-->