var mousey,mousex;
if (document.images) {
	var a= new Image;
	var b= new Image;
	a.src="images/spacer.gif";
	b.src="images/blkarrow.gif";
}
function obj_r(nm) {
	return eval("document.images." + nm);
}
function change_a(nm) {
	if (!document.images) {
		return true;
	}
	var obj;
	obj=obj_r(nm);
	obj.src=b.src;
	show(nm+"_text");
	return true;
}
function change_b(nm) {
	if (!document.images) {
		return true;
	}
	var obj;
	obj=obj_r(nm);
	obj.src=a.src;
	hide(nm+"_text");
	return true;
}

function show(object) {
	var obj;
	if (document.getElementById) {
		obj=document.getElementById(object);

  	} else if (document.layers && document.layers[object]) {
    		obj.document.layers[object];
	} else if (document.all) {
    		obj=document.all[object];
	}
    	if(obj!=undefined) {
		obj.style.visibility = 'visible';
		obj.style.top = (mousey+10).toString()+'px';
		obj.style.left = (mousex-5).toString()+'px';
	}
}

function hide(object) {
	var obj;
	if (document.getElementById) {
		obj=document.getElementById(object);

  	} else if (document.layers && document.layers[object]) {
    		obj.document.layers[object];
	} else if (document.all) {
    		obj=document.all[object];
	}
    	if(obj!=undefined) {
		obj.style.visibility = 'hidden';
	}
}

//if (document.layers) 
if (document.captureEvents) document.captureEvents(Event.MOUSEMOVE);
document.onmousemove=mtrack;

function mtrack(e) {
   mousex=(e)?e.pageX:event.x;
   mousey=(e)?e.pageY:event.y;
}