function detectWidth(){ 

	if(document.body.clientWidth < 1150) return (0); else return (1);

}


function showHideBanner(){ 

		if(detectWidth()==1){
			document.getElementById("banner_left120X600").style.display="block";
			document.getElementById("banner_right120X600").style.display="block"; 
		}else{
			document.getElementById("banner_left120X600").style.display="none";
			document.getElementById("banner_right120X600").style.display="none"; 
		}

	
}

window.onresize = function(){

	showHideBanner();
}


if (window.addEventListener) {
  window.addEventListener('load', showHideBanner, false);
}
else if (window.attachEvent) {
  window.attachEvent('onload', showHideBanner );
}