if (document.images){

	img00on = new Image(); img00on.src = "img/m_top_on.gif";
	img01on = new Image(); img01on.src = "img/mbt1_on.gif";
	img02on = new Image(); img02on.src = "img/mbt2_on.gif";
	img03on = new Image(); img03on.src = "img/mbt3_on.gif";
	img04on = new Image(); img04on.src = "img/mbt4_on.gif";
	img05on = new Image(); img05on.src = "img/mbt5_on.gif";
	img06on = new Image(); img06on.src = "img/mbt6_on.gif";
	img07on = new Image(); img07on.src = "img/mbt7_on.gif";
	img08on = new Image(); img08on.src = "img/mbt8_on.gif";

	img00off = new Image(); img00off.src = "img/m_top_of.gif";
	img01off = new Image(); img01off.src = "img/mbt1_of.gif";
	img02off = new Image(); img02off.src = "img/mbt2_of.gif";
	img03off = new Image(); img03off.src = "img/mbt3_of.gif";
	img04off = new Image(); img04off.src = "img/mbt4_of.gif";
	img05off = new Image(); img05off.src = "img/mbt5_of.gif";
	img06off = new Image(); img06off.src = "img/mbt6_of.gif";
	img07off = new Image(); img07off.src = "img/mbt7_of.gif";
	img08off = new Image(); img08off.src = "img/mbt8_of.gif";
	

	}

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

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