function openWin(url,w,h)
{
	var wtop = (screen.height-h)/2;
    var wleft = (screen.width-w)/2;
	var win=window.open(url,'win',"scrollbars=yes,resizable=yes,width="+w+", height="+h+",top="+wtop+",left="+wleft)
	win.focus()
}

function b(tileID)
/*buytile*/
{
	openWin("buyTile.php?tileID="+tileID,550,600)
}

function v(tileID)
/*viewtile*/
{
	openWin("viewTile.php?tileID="+tileID,690,600)
}

function donation()
/*single donation*/
{
	openWin("donation.php",500,600)
}