function browserWidth() {
	var myWidth = 0
	if( typeof( window.innerWidth ) == 'number' ) {
		//Non-IE
		myWidth = window.innerWidth;
	} else if( document.documentElement && document.documentElement.clientWidth ) {
		//IE 6+ in 'standards compliant mode'
		myWidth = document.documentElement.clientWidth;
	} else if( document.body && document.body.clientWidth ) {
		//IE 4 compatible
		myWidth = document.body.clientWidth;
	}
	return myWidth;
}

largeurPage=browserWidth();
if (largeurPage>1024) {
	document.write("<style type='text/css'>#centre {width:100%;} table.news {width:100%;}  #centreAccueil {width:100%;}</style>");
} else if (largeurPage<900) {
	document.write("<style type='text/css'>#centre {_width:80%;} table.news {_width:100%;}  #centreAccueil {width:_80%;}</style>");
}