var hideleftmenu=0;


var bullet_off=new Image(); 
bullet_off.src="pic/menu_bullet.gif"; 

var bullet_on=new Image(); 
bullet_on.src="pic/menu_bullet_on.gif";
	
	
function check_version() {
 	var app=navigator.appName;
 	var version=navigator.appVersion;
 
 	var ver="explorer";
	  if (app.indexOf('Netscape')!=-1) {
   		ver="netscape";
  	}
  	if (app.indexOf('Microsoft')!=-1) {
   		var version_num=parseFloat(version);
    if (version_num<4) {
      ver="netscape";
    }
  }
 return ver;
}


function change_positions() {
 var ver=check_version();
  
	 var y=document.body.offsetWidth;
		//alert(y);
	if (ver=="explorer") {
		//top_menu=50;
		  if (y<=935)  {
    	 	left_menu=210;
  		}
  		else {  		
     		left_menu=(document.body.offsetWidth/2)-260; //225     
  		}
	}

	if (ver=="netscape") {
	  if (y<=935)  {
     	left_menu=210;
  	}
  	else {
     	left_menu=(document.body.offsetWidth/2)-260; //225
  	}  	
	}	
}

function move_menu(id,type,left,top) {		
	if (type=='on') {
		change_positions();
		hide_leftmenu(1);
		eval("document.getElementById('leftsub"+id+"').style.left='"+(left+left_menu)+"px';");	
		eval("document.getElementById('leftsub"+id+"').style.top='"+top+"px';");	
		eval("document.getElementById('leftsub"+id+"').className='m1';");	
		hideleftmenu=1;
	}	
	if (type=='off') {
		hideleftmenu=0;
		setTimeout(hide_leftmenu,1500);
	}	
}

function swap_pic(id,type,left,top) {
	var name="menu"+id;

	
	if (type=="on") {		
		eval("document.images['"+name+"'].src="+name+"_"+type+".src");	
	}
	
	if (type=="off") {		
		eval("document.images['"+name+"'].src="+name+"_"+type+".src");	
	}
	
	
	move_menu(id,type,left,top);
	
}

function change_menu(id,type,style) {
	var name="menuitem"+id;
	var mbullet="bullet"+id;
	
	if (style=='') style='mitem1tr';
		
	if (type=='on') {		
		eval("document.getElementById('"+name+"').className='"+style+"_on'");	
		if (style=='mitem1tr') eval("document.images['"+mbullet+"'].src=bullet_"+type+".src");		
		hideleftmenu=1;
	}
	if (type=='off') {		
		eval("document.getElementById('"+name+"').className='"+style+"'");	
		if (style=='mitem1tr') eval("document.images['"+mbullet+"'].src=bullet_"+type+".src");		
		hideleftmenu=0;
		setTimeout(hide_leftmenu,1000);
	}
}