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");
	}
}

function open_window(url,width,height,scroll)
	{
		mywin = window.open(url,"map",'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars='+scroll+',resizable=0,left=80,width=' +width+ ',height=' +height+ ',top=50')
	}