switch(screen.width)
{case 1024 :
document.write('');
//alert(screen.width);
break;
case 800:
document.write('');
//alert(screen.width);
break;
case 1280:
document.write('');
//alert(screen.width);
break;
case 1152:
document.write('');
//alert(screen.width);
break;
case 1360:
document.write('');
//alert(screen.width);
break;
case 1366:
document.write('');
//alert(screen.width);
break;
case 1440:
document.write('');
//alert(screen.width);
break;
}