function changeto(highlightcolor){
	source=event.srcElement
	if (source.tagName=="TR"||source.tagName=="TABLE")
		return
	while(source.tagName!="TD")
		source=source.parentElement
	if (source.style.backgroundColor!=highlightcolor&&source.id!="ignore")
		source.style.backgroundColor=highlightcolor
}

function changeback(originalcolor){
if (event.fromElement.contains(event.toElement)||source.contains(event.toElement)||source.id=="ignore")
return
if (event.toElement!=source)
source.style.backgroundColor=originalcolor
}