if(navigator.appName=='Netscape') {
 if(window.innerWidth>1024) {
  curhgt=window.innerWidth-150 }
  else { curhgt=870 } }
else if(document.body.clientWidth>1024) {
 curhgt=document.body.clientWidth-150 }
 else { curhgt=870 }
document.getElementById('mainsect').style.width=curhgt + 'px';