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

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

}

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