function abs_pos(val1, valNetscape, valIELow) {
	if(navigator.appName == "Microsoft Internet Explorer")
		if((navigator.userAgent).substring(30,33) <= 5)
		{
			scr_posABS = (screen.width - 800) / 2;
			return (0 <= scr_posABS ? scr_posABS + valIELow: 10) + val1;
		}
	    else
			return val1;
	else
	{
		scr_posABS = (screen.width - 800) / 2;
		return (0 <= scr_posABS ? scr_posABS + valNetscape : 0) + val1;
	}
}