function changeto2(highlightcolor){
sourceid=event.srcElement.id
source=event.srcElement
if (source.tagName=="TD")
if (sourceid.length==4)
{
	colonna=sourceid.slice(0,2)
	rigo=sourceid.slice(2,4)
//	alert("colonna="+colonna)
//	alert("rigo="+rigo)
}
if (sourceid.length==3)
{
	colonna=sourceid.slice(0,1)
	rigo=sourceid.slice(1,3)
}
if (sourceid.length==2)
{
	colonna=sourceid.slice(0,1)
	rigo=sourceid.slice(1,2)
}
source1=document.getElementById(colonna)
source2=document.getElementById(rigo)
//rigo=sourceid[1]
//alert("colonna="+colonna)
if (source.style.backgroundColor!=highlightcolor)
source.style.backgroundColor=highlightcolor
source1.style.backgroundColor=highlightcolor
source2.style.backgroundColor=highlightcolor
}

function changeback2(originalcolor){
if (event.fromElement.contains(event.toElement)||source.contains(event.toElement))
return
if (event.toElement!=source)
source.style.backgroundColor=originalcolor
if (sourceid.length==4)
{
	colonna=sourceid.slice(0,2)
	rigo=sourceid.slice(2,4)
//	alert("colonna="+colonna)
//	alert("rigo="+rigo)
}
if (sourceid.length==3)
{
	colonna=sourceid.slice(0,1)
	rigo=sourceid.slice(1,3)
}
if (sourceid.length==2)
{
	colonna=sourceid.slice(0,1)
	rigo=sourceid.slice(1,2)
}
source1=document.getElementById(colonna)
source2=document.getElementById(rigo)
source1.style.backgroundColor=originalcolor
source2.style.backgroundColor=originalcolor
}