// JavaScript Documentvar screenW = 640, screenH = 480;
var screenW
var screenH
	alertSize()
function alertSize() {
  screenW = 0
  screenH = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    screenW = window.innerWidth;
    screenH = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    screenW = document.documentElement.clientWidth;
    screenH = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    screenW = document.body.clientWidth;
    screenH = document.body.clientHeight;
  }
 // window.alert( 'Width = ' + screenW );
  //window.alert( 'Height = ' + screenH );
}

function setlayersize(){
	bglayer = getObject("backlay");
	bglayer.style.width= screenW+"px";
	bglayer.style.height= screenH+"px";
	bglayer.style.backgroundColor  = "cccccc";
	var left = screenW/2-170;
	var top = screenH/2-70;
	loglayer = getObject("Layer1");
	loglayer.style.top = top+"px";
	loglayer.style.left = left+"px";

	
}
function showlogin(){
	lay1 = getObject("backlay");
	lay2 = getObject("Layer1");
	lay1.style.visibility = "visible";
	lay2.style.visibility = "visible";
	
}
function hidelogin(){
	lay1 = getObject("backlay");
	lay2 = getObject("Layer1");
	lay1.style.visibility = "hidden";
	lay2.style.visibility = "hidden";
	
}
function getObject( obj ) {

  if ( document.getElementById ) {
    obj = document.getElementById( obj );

  } else if ( document.all ) {
    obj = document.all.item( obj );

  } else {
    obj = null;
  }
  return obj;
  }