{
var Mbut1=new Image();
Mbut1.src="img/m_1.gif";
var Mbut2=new Image();
Mbut2.src="img/m_2.gif";
}
  function MenChg(a)
{
  if (a==1) document.Menue1.src="img/m_1.gif";
  if (a==2) document.Menue1.src="img/m_2.gif";
  if (a==3) document.Menue2.src="img/m_1.gif";
  if (a==4) document.Menue2.src="img/m_2.gif";
  if (a==5) document.Menue3.src="img/m_1.gif";
  if (a==6) document.Menue3.src="img/m_2.gif";
  if (a==7) document.Menue4.src="img/m_1.gif";
  if (a==8) document.Menue4.src="img/m_2.gif";
  if (a==9) document.Menue5.src="img/m_1.gif";
  if (a==10) document.Menue5.src="img/m_2.gif";
  if (a==11) document.Menue6.src="img/m_1.gif";
  if (a==12) document.Menue6.src="img/m_2.gif";
}