var popWin;

function overMe(imagename)
{
	document.getElementById(imagename).src='img/b_'+imagename+'_o.gif';
}

function outMe(imagename)
{
	document.getElementById(imagename).src='img/b_'+imagename+'.gif';
}

function openWin(width, height, url, parameters)
{
	if (popWin && !popWin.closed)
	{
		popWin.close();
	}
	popWin = window.open(url,'popWin','width='+width+',height='+height+','+parameters);
	popWin.focus();
}