if(document.images){ //preloads images
	var Off;
	Off= new Array();
	Off[0]= new Image();
	Off[0].src='/Marston/Common/Images/n-home.gif';
	Off[1]= new Image();
	Off[1].src='/Marston/Common/Images/n-company.gif';
	Off[2]= new Image();
	Off[2].src='/Marston/Common/Images/n-what-we-do.gif';
	Off[3]= new Image();
	Off[3].src='/Marston/Common/Images/n-faq.gif';
	Off[4]= new Image();
	Off[4].src='/Marston/Common/Images/n-marston-difference.gif';
	Off[5]= new Image();
	Off[5].src='/Marston/Common/Images/n-va-courts.gif';
	
	var On;
	On= new Array();
	On[0]= new Image();
	On[0].src='/Marston/Common/Images/n-home-on.gif';
	On[1]= new Image();
	On[1].src='/Marston/Common/Images/n-company-on.gif';
	On[2]= new Image();
	On[2].src='/Marston/Common/Images/n-what-we-do-on.gif';
	On[3]= new Image();
	On[3].src='/Marston/Common/Images/n-faq-on.gif';
	On[4]= new Image();
	On[4].src='/Marston/Common/Images/n-marston-difference-on.gif';
	On[5]= new Image();
	On[5].src='/Marston/Common/Images/n-va-courts-on.gif';
}

function rollOn(imgName,imgNum){
	if(document.images){
		document.images[imgName].src = On[imgNum].src;
	}
}

function rollOff(imgName,imgNum){
	if(document.images){
		document.images[imgName].src = Off[imgNum].src;
	}
}