function resizeBg(currentPage) {
  if (document.all) {
    if (document.body.clientHeight > document.all.content.offsetHeight) {
      document.all.bg.style.height = document.body.clientHeight;
    } else {
	  document.all.bg.style.height = document.all.content.offsetHeight;
    }
    if (document.body.clientWidth > 768) {
      document.all.bg.style.width = document.body.clientWidth;
    } else {
      document.all.bg.style.width = 768;
    }
  } else if (document.getElementById) {
    if (window.innerHeight > document.getElementById('content').offsetHeight) {
      document.getElementById('bg').style.height = window.innerHeight;
    } else if (document.getElementById('content').offsetHeight < 8000) {
	  document.getElementById('bg').style.height = document.getElementById('content').offsetHeight;
	} else {
	  document.getElementById('bg').style.height = 8000;
    }
    if (window.innerWidth > 768) {
      document.getElementById('bg').style.width = document.getElementById('content').offsetWidth;
    } else {
      document.getElementById('bg').style.width = 768;
    }
  }
  if (currentPage == 'home') {
    if (document.all) {
      if (document.body.clientHeight > document.all.content.offsetHeight) {
        document.all.content.style.top = (document.body.clientHeight/2)-(document.all.content.offsetHeight/2);
      } else {
  	  document.all.content.style.top = 0;
      }
    } else if (document.getElementById) {
      if (window.innerHeight > document.getElementById('content').offsetHeight) {
        document.getElementById('content').style.top = (window.innerHeight/2)-(document.getElementById('content').offsetHeight/2);
      } else {
  	  document.getElementById('content').style.top = 0;
      }
    }
    for (n=0; n<popMenus.length; n++) {
      if (document.all) {
        document.all[popMenus[n]+'Pop'].style.top = (document.all.bg.offsetHeight/2)-156;
      } else if (document.getElementById) {
	    document.getElementById(popMenus[n]+'Pop').style.top = (document.getElementById('bg').offsetHeight/2)-156;
      }
    }
  }
}