var current="";
function ro(ths)
{
	if (current != ths.id )
	{
		ths.src = ths.src.replace("_on","_of_");
		ths.src = ths.src.replace("_off","_on");
		ths.src = ths.src.replace("_of_","_off");
	}
}
function clk(ths){
	if(current > "")
	{
		var c = eval ("document.forms[0]." + current)
//		if (c != null)
			c.src = c.src.replace("_on","_off");
	}
	current=ths.id;
}