function chvalue (f,v,selectedtype)
{
document.forms[f].elements[v].value=selectedtype;
}
function chaction (f,adonde,acual)
{
	document.forms[f].target=acual;
document.forms[f].action=adonde;
}
function submitvalue (f)
{
document.forms[f].submit();
}
function pop(url,nom)
{
window.open(url,nom,"menubar=no,width=430,height=360,toolbar=no");
}