function openBL(){
	$('box_dark').style.display='block';
	$('box_dark').style.height=$('container').offsetHeight + 'px';
	$('box_light').style.display='block';
	$('box_light').style.top=getScrollY() + 50 + 'px';
	//document.getElementsByTagName('html')[0].style.overflow='hidden';
}

function closeBL(){
	$('box_dark').style.display='none';
	$('box_light').style.display='none';
	document.getElementsByTagName('html')[0].style.overflow='auto';
	$('box_inner').innerHTML='<img src="/template/images/ajax-loader.gif" width="32" height="32" alt="loading..." class="pa" style="top: 50%; left: 50%;" />';
}

function getScrollY() {
  var scrOfY = 0;
  if( typeof( window.pageYOffset ) == 'number' ) {
    //Netscape compliant
    scrOfY = window.pageYOffset;
  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
    //DOM compliant
    scrOfY = document.body.scrollTop;
  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
    //IE6 standards compliant mode
    scrOfY = document.documentElement.scrollTop;
  }
  return scrOfY;
}