function MM_preloadImages() 
{
	var d=document;
	
	if(d.images)
	{ 
		if(!d.MM_p) d.MM_p=new Array();
    		var i,j=d.MM_p.length,a=MM_preloadImages.arguments;
    		for(i=0; i<a.length; i++)
    		if (a[i].indexOf("#")!=0)
		{ 
    			d.MM_p[j]=new Image;
    			d.MM_p[j++].src=a[i];
		}
    	}
}

function chg_Img(objName,objSrc,divNm,divTy)
{
	initialize();
	objName.src = objSrc;
	MM_showHideLayers(divNm,'',divTy);
}

function MM_showHideLayers() 
{
  	var i,p,v,obj,args=MM_showHideLayers.arguments;
	for (i=0; i<(args.length-2); i+=3) 
		if ((obj=MM_findObj(args[i]))!=null) 
		{ 
			v=args[i+2];
    			if (obj.style) 
    			{ 
    				obj=obj.style; 
    				v=(v=='show')?'visible':(v='hide')?'hidden':v; 
    			}
    			obj.visibility=v; 
    		}
}

function MM_findObj(n, d) 
{
  	var p,i,x;
  	if(!d) d=document; 
  		if((p=n.indexOf("?"))>0&&parent.frames.length) 
  		{
    			d=parent.frames[n.substring(p+1)].document; 
    			n=n.substring(0,p);
    		}
  		if(!(x=d[n])&&d.all) x=d.all[n]; 
  			for (i=0;!x&&i<d.forms.length;i++) 
  				x=d.forms[i][n];
  		for(i=0;!x&&d.layers&&i<d.layers.length;i++) 
  			x=MM_findObj(n,d.layers[i].document); 
	return x;
}

function initialize()
{
	window.document.mnImg1.src = '/images/menu220.gif';
	window.document.mnImg2.src = '/images/menu320.gif';
	window.document.mnImg4.src = '/images/menu520.gif';
	window.document.mnImg5.src = '/images/menu620.gif';
	window.document.mnImg6.src = '/images/menu720.gif';
	window.document.mnImg7.src = '/images/menu820.gif';
	window.document.mnImg8.src = '/images/menu522.gif';
	MM_showHideLayers('mn1','','hide');
	MM_showHideLayers('mn2','','hide');
	MM_showHideLayers('mn3','','hide');
}