function createImg(imgName,imgSrc) {
    eval(imgName + ' = new Image()');
    eval(imgName + '.src = "' + imgSrc + '"');
}

function setIdProperty(id,property,value) {
  if (document.getElementById) {
    var styleObject = document.getElementById( id );
    if (styleObject != null) {
      styleObject = styleObject.style;
      styleObject[ property ] = value;
    }
    return;
  }
}

function checkBrowser() {
	if (document.getElementById) {
		setIdProperty("fontmore","display","none");
		setIdProperty("morebtn","display","inline");
	}
	return true;
}

function showAbout() {
	setIdProperty('tabmore','display','block');
	setIdProperty('fontmore','display','block');
	setIdProperty('tababout','display','none');
	setIdProperty('fontabout','display','none');
}

function showMore() {
	setIdProperty('tababout','display','block');
	setIdProperty('fontabout','display','block');
	setIdProperty('tabmore','display','none');
	setIdProperty('fontmore','display','none');
}

//preload images
createImg("more_lt","images/tabs/more_lt.gif");
createImg("more_bot","images/tabs/more_bot.gif");
createImg("about_dk","images/tabs/about_dk.gif");
createImg("about_bot","images/tabs/about_bot.gif");