// start: mouseover script and image preloader
	
function msover(img,ref)
	{
			document.images[img].src = ref;
	}

function msout(img,ref)
	{
			document.images[img].src = ref;
	}
	
function showHideSub(id){
	if(document.getElementById(id).style.display=='block'){
		document.getElementById(id).style.display='none';
	}else{
		document.getElementById(id).style.display='block';
	}
}