function MenuOver(id,mnuname){
 obj=document.getElementById(id);
 if (obj) obj.src='i/mnu_'+mnuname+'_act.gif';
}

function MenuOut(id,mnuname){
 obj=document.getElementById(id);
 if (obj) obj.src='i/mnu_'+mnuname+'.gif';
}

function LoadMenuImages() {
 img_0 = new Image(); img_0.src='i/mnu_business_act.gif';
 img_1 = new Image(); img_1.src='i/mnu_grammar_act.gif';
 img_2 = new Image(); img_2.src='i/mnu_idioms_act.gif';
 img_3 = new Image(); img_3.src='i/mnu_listening_act.gif';
 img_4 = new Image(); img_4.src='i/mnu_pronunciation_act.gif';
 img_5 = new Image(); img_5.src='i/mnu_reading_act.gif';
 img_6 = new Image(); img_6.src='i/mnu_speaking_act.gif';
 img_7 = new Image(); img_7.src='i/mnu_toefl_act.gif';
 img_8 = new Image(); img_8.src='i/mnu_vocabulary_act.gif';
 img_9 = new Image(); img_9.src='i/mnu_writing_act.gif';
}

 window.onload = LoadMenuImages;