//var flagi = "m1";
//var flaga = 1;
var imag=new Array();

function change(img,i) { 
/*
if (document.all) { document.images[img].src = "/pages/images/menu/"+imags[i]; }
else { document.menut.document.images[img].src = "/pages/images/menu/"+imags[i];}
//alert(document.images[img].src);
*/
document.images[img].src = "/pages/images/menu/"+imags[i];
}

function chgf(img,i) { 
if(img =="m10"){img="m1";}
if (document.all) { top.frames.topmenu.document.images[img].src = "/pages/images/menu/"+imags[i]; }
else { top.frames.topmenu.document.menut.document.images[img].src = "/pages/images/menu/"+imags[i];}
top.frames.topmenu.document.form1.flagi.value = img;
top.frames.topmenu.document.form1.flaga.value = i;
}

function over(img,i){ 
if ((document.form1.flagi.value) != img) {change(img,i);}
}

function clk(img,i) {
if(document.form1.flagi.value == "m10"){document.form1.flagi.value="m1";}
if (document.form1.flaga.value != 100){ change(document.form1.flagi.value,eval(document.form1.flaga.value)-1);}
if (img != "100"){ change(img,i);}
document.form1.flagi.value = img;
document.form1.flaga.value = i;
}
function clk0(img,i) {
 document.images['m1'].src = "/pages/images/menu/"+imags[0];
 document.images['m2'].src = "/pages/images/menu/"+imags[2];
 document.images['m3'].src = "/pages/images/menu/"+imags[4];
 document.images['m4'].src = "/pages/images/menu/"+imags[6];
 document.images['m5'].src = "/pages/images/menu/"+imags[8];
 document.images['m6'].src = "/pages/images/menu/"+imags[10];
 document.images['m7'].src = "/pages/images/menu/"+imags[12];
 document.images['m8'].src = "/pages/images/menu/"+imags[14];
document.images['m9'].src = "/pages/images/menu/"+imags[16];
document.form1.flagi.value = img;
document.form1.flaga.value = i;
}
<!-- menu -->
imags=new Array("m1.jpg",
"m1on.jpg",
"m2.jpg",
"m2on.jpg",
"m3.jpg",
"m3on.jpg",
"m4.jpg",
"m4on.jpg",
"m5.jpg",
"m5on.jpg",
"m6.jpg",
"m6on.jpg",
"m7.jpg",
"m7on.jpg",
"m8.jpg",
"m8on.jpg",
"m9.jpg",
"m9on.jpg");

for(i=0; i<17; i++){
    imag[i]=new Image;
	imag[i].src="/pages/images/menu/"+imags[i];
}
function went(page) {
//top.frames.main.document.location.href = page;
//alert(page);
parent.main.document.location.href = page;
}