小霰弹枪:请问这段java代码如何改

我想改前景图，和字色什么的，请大各位帮我加个注！！谢谢了

<script language=javascript>

var mmenus = new Array();
var misShow = new Boolean();
misShow=false;
var misdown = new Boolean();
misdown=false;
var mnumberofsub=0;
var musestatus=false;
var mpopTimer = 0;
mmenucolor='Menu';
mfontcolor='MenuText';
mmenuoutcolor='#B5BED6';
mmenuincolor='#B5BED6';
mmenuoutbordercolor='#000000';
mmenuinbordercolor='#000000';
mmidoutcolor='#8D8A85';
mmidincolor='#8D8A85';
mmenuovercolor='MenuText';
mitemedge='1';
msubedge='0';
mmenuunitwidth=100;
mmenuitemwidth=110;
mmenuheight=25;
mmenuwidth='100%';
mmenuadjust=0;
mmenuadjustV=0;
mfonts='font-family: 宋体; font-size: 9pt; color: MenuText; ';mcursor='default';

function stoperror(){
return true;
}

window.onerror=stoperror;

function mpopOut() {
mpopTimer = setTimeout('mallhide()', 500);
}

function getReal(el, type, value) {
temp = el;
while ((temp != null) && (temp.tagName != "BODY")) {
if (eval("temp." + type) == value) {
el = temp;
return el;
}
temp = temp.parentElement;
}
return el;
}

function mMenuRegister(menu)
{
mmenus[mmenus.length] = menu
return (mmenus.length - 1)
}

function mMenuItem(caption,command,target,isline,statustxt,level,img,sizex,sizey,pos){
this.items = new Array();
this.caption=caption;
this.command=command;
this.target=target;
this.isline=isline;
this.statustxt=statustxt;
if(level!=null){mnumberofsub++;
this.hasc=mnumberofsub;}
this.level=level;
this.img=img;
this.sizex=sizex;
this.sizey=sizey;
this.pos=pos;
}

function mMenu(caption,command,target,img,sizex,sizey,pos){
this.items = new Array();
this.caption=caption;
this.command=command;
this.target=target;
this.img=img;
this.sizex=sizex;
this.sizey=sizey;
this.pos=pos;
this.id=mMenuRegister(this);
}
function mMenuAddItem(item)
{
this.items[this.items.length] = item
item.parent = this.id;
this.children=true;
}