//<![CDATA[
  
  var windowWidth=screen.availWidth/2+"px";
  var windowHeight=screen.availHeight/4*3+"px"

function sniffer() {
  var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    myHeight = window.innerHeight;
    myWidth = window.innerWidth;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    myWidth =  document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    myHeight = document.body.clientHeight;
    myWidth = document.body.clientWidth;
  }

  document.getElementById("insideman").style.height = myHeight - 180 + 'px'; 
  document.getElementById("insideman").style.width = myWidth - 249 + 'px'; 

    }   


onload='sniffer()';
//]]>


window.onresize = function(){
sniffer();
}