function popWin( z, x, y) {
   w = screen.width;
   h = screen.height;
   sx = w/2-240;
   sy = h/2-175;
   window.open(z,'','status=yes,resizable=yes,scrollbars=yes,toolbar=no,location=no,directories=no,menubar=no,width='+x+',height='+y+',top='+sy+',left='+sx+',screenX='+sx+',screenY='+sy);
}

function ChangeFontSize( val) {
	var Current = parseInt(document.getElementById('text').style.fontSize);

	if ( val=="+") {
		if ( (Current+1)<20) {
			document.getElementById('text').style.fontSize=(Current+1)+'px';
			Current = Current+1;
		}
	} else
	if (val=="-") {
		if ( (Current+1)>10) {
			document.getElementById('text').style.fontSize=(Current-1)+'px';
			Current = Current-1;
		}
	}
	var obj = document.getElementById('text');
	var aTag = obj.getElementsByTagName("*");
		for ( var i in aTag ) 
			if ( aTag[i].style ) 
				aTag[i].style.fontSize=Current;
}