function meretez()
	{
var myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myHeight = window.innerHeight-16;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myHeight = document.body.clientHeight;
  }

	var mainh=document.getElementById("div_mai_keret_kozep").offsetHeight;
	var menuh=document.getElementById("div_menu").offsetHeight;
	var minh=myHeight;
	var main_keret_top_bottom_height=61;
	var menu_menu_header_ennyivel_kisebb_mint_main_header=22;
	var minh=myHeight-166-main_keret_top_bottom_height;
	if(minh>mainh)
		{
		//minh
		document.getElementById("div_mai_keret_kozep").style.height=(minh)+"px";
		}
	}