if (document.images)	{
	nhs07retail = new Image();			nhs07retail.src = "images/nhs07retail.gif";
	nhs07retailo = new Image();		nhs07retailo.src = "images/nhs07retailo.gif"; 
	nhs07journal = new Image();			nhs07journal.src = "images/nhs07journal.gif";
	nhs07journalo = new Image();		nhs07journalo.src = "images/nhs07journalo.gif";
	nhs07collect = new Image();		nhs07collect.src = "images/nhs07collect.gif";
	nhs07collecto = new Image();		nhs07collecto.src = "images/nhs07collecto.gif";
	nhs07our = new Image();			nhs07our.src = "images/nhs07our.gif";
	nhs07ouro = new Image();			nhs07ouro.src = "images/nhs07ouro.gif";
	nhs07contact = new Image();		nhs07contact.src = "images/nhs07contact.gif";
	nhs07contacto = new Image();		nhs07contacto.src = "images/nhs07contacto.gif";
	nhs07home = new Image();		nhs07home.src = "images/nhs07home.gif";
	nhs07homeo = new Image();		nhs07homeo.src = "images/nhs07homeo.gif";

}

function imgOn(imgName) {
    if (document.images) {
        document[imgName].src = eval(imgName + "o.src");
    }
}

function imgOff(imgName) {
    if (document.images) {
        document[imgName].src = eval(imgName + ".src");
    }
}