function alertSize() {
  var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }
  //window.alert( 'Width = ' + myWidth );
  //window.alert( 'Height = ' + myHeight );
  if( myWidth >= '1650' )
  		{
		document.getElementById("mainfield").style.width= 1395;
		//document.getElementById("rightmenu").style.left= myWidth - 470;
		//document.getElementById("scrollUserTable").style.height= myHeight;
		}
  
  else if( myWidth >= '1014' )
  		{
		document.getElementById("mainfield").style.width= myWidth - 255;
		//document.getElementById("rightmenu").style.left= myWidth - 470;
		//document.getElementById("scrollUserTable").style.height= myHeight;
		}
  else {
	   document.getElementById("content").style.width= 1004;
	   document.getElementById("mainfield").style.width= 770;
	   //document.getElementById("rightmenu").style.left= myWidth - 470;
	   //document.getElementById("scrollUserTable").style.height= myHeight-2;
	   }
}