if(document.images)
{	
	i10=new Image(); i10.src="./_img/lk-10.gif";		i11=new Image(); i11.src="./_img/lk-11.gif";
	i20=new Image(); i20.src="./_img/lk-20.gif";		i21=new Image(); i21.src="./_img/lk-21.gif";
	i30=new Image(); i30.src="./_img/lk-30.gif";		i31=new Image(); i31.src="./_img/lk-31.gif";
	i40=new Image(); i40.src="./_img/lk-40.gif";		i41=new Image(); i41.src="./_img/lk-41.gif";
	i50=new Image(); i50.src="./_img/lk-50.gif";		i51=new Image(); i51.src="./_img/lk-51.gif";
	i60=new Image(); i60.src="./_img/lk-60.gif";		i61=new Image(); i61.src="./_img/lk-61.gif";
	i70=new Image(); i70.src="./_img/lk-70.gif";		i71=new Image(); i71.src="./_img/lk-71.gif";
}

function imgOn(imgName)
{ if (document.images)	{ document[imgName].src = eval(imgName + "1.src"); } 
}

function imgOff(imgName)
{ if (document.images)	{ document[imgName].src = eval(imgName + "0.src"); } 
}