var last_button = -1;
var imgObj;

function MM_preloadImages() { //v3.0
  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 over(imgNum) {

	//image object
	if(ns4) { imgObj = document.layers["navlayer"].document.images["b"+imgNum]; }
	else { imgObj = document.images["b"+imgNum]; }

	//change image
	imgObj.src = imgs[imgNum][1].src;

	//find position of image
	xPos = getRealLeft(imgObj);
	yPos = getRealTop(imgObj);

		//activate menu with returned co-ordinates
	if(menuReadyState) { activateMenu(imgNum,xPos,yPos+1+imgObj.height); }

	//reset last image
	if( last_button != -1 )
		{
		if(ns4) { imgObj = document.layers["navlayer"].document.images["b"+last_button]; }
		else { imgObj = document.images["b"+last_button]; }
		imgObj.src = imgs[last_button][0].src;	
		}

	last_button = imgNum;

	}


function menuClosingFunction() 
{
	//reset all images
	if( last_button != -1 )
		{
		if(ns4) { imgObj = document.layers["navlayer"].document.images["b"+last_button]; }
		else { imgObj = document.images["b"+last_button]; }
		imgObj.src = imgs[last_button][0].src;	
		}
	else
	{
		for(i=0;i<8;i++){
			if(ns4) { imgObj = document.layers["navlayer"].document.images["b"+i]; }
			else { imgObj = document.images["b"+i]; }
			imgObj.src = imgs[i][0].src;
			}
	}
	last_button = -1;				
}