function navchange(language) {
var link;
  if (self.location.pathname=="/") {
	link = "index.";
  } else {
    link = self.location.href.slice(0,self.location.href.search(/.php/)+1);
  }
  link = link.slice(0,link.search(/_t/));
  if (language=="thai") {
	  link+="_t";
  }
  link+=".php"; 
  self.location=link;
}
function over(x) {
  x.style.borderStyle="inset";
  if (x.id=="menu_s") {
    x.style.backgroundColor="#ffdd44";
  } else {
    x.style.backgroundColor="#00b200";
  }
}
function out(x) {
  x.style.borderStyle="groove";
  if (x.id=="menu_s") {
    x.style.backgroundColor="#ffcc33";
  } else {
    x.style.backgroundColor="#008000";
  }
}
function linkover(x) {
  x.style.fontWeight="bold";
  x.style.color="red";
}
function linkout(x) {
  x.style.fontWeight="normal";
  x.style.color="#003366";
}