function showBox(width,height,divid,iframeid,iframesrc) {
  if (iframeid != '') {
      darken('body');
      var arrayPageSize = getPageSize();
      var arrayPageScroll = getPageScroll();
      document.getElementById(iframeid).src = iframesrc; 
      document.getElementById(iframeid).width = width - 2; 
      document.getElementById(iframeid).height = height - 2; 
      document.getElementById(divid).style.width = width; 
      document.getElementById(divid).style.height = height; 
      document.getElementById(divid).style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - height) / 2) + 'px');
      document.getElementById(divid).style.left = (((arrayPageSize[0] - 20 - width) / 2) + 'px');
      document.getElementById(divid).style.display = 'block';
  } else {
      darken('body');
      var arrayPageSize = getPageSize();
      var arrayPageScroll = getPageScroll();
      document.getElementById(divid).style.width = width; 
      document.getElementById(divid).style.height = height; 
      document.getElementById(divid).style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - height) / 2) + 'px');
      document.getElementById(divid).style.left = (((arrayPageSize[0] - 20 - width) / 2) + 'px');
      document.getElementById(divid).style.display = 'block';
  }
}

function hideBox(divid,iframeid) {
  lighten('body');
  document.getElementById(divid).style.display = 'none';
  if (iframeid != '') {
      document.getElementById(iframeid).src = ''; 
  }
}

function darken(did) {
//  elm = document.getElementById(did);
//  elm.style.filter = "alpha(opacity=30);-khtml-opacity: .3;-moz-opacity: .3;opacity: .3";
}

function lighten(did) {
//  elm = document.getElementById(did);
//  elm.style.filter = "alpha(opacity=100);-khtml-opacity: 1.0;-moz-opacity: 1.0;opacity: 1.0";
}

function getPageScroll(){
  var yScroll;
  if (self.pageYOffset) {
      yScroll = self.pageYOffset;
  } else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
      yScroll = document.documentElement.scrollTop;
  } else if (document.body) {// all other Explorers
      yScroll = document.body.scrollTop;
  }
  arrayPageScroll = new Array('',yScroll) 
  return arrayPageScroll;
}

function getPageSize(){
  var xScroll, yScroll;
  if (window.innerHeight && window.scrollMaxY) {	
      xScroll = document.body.scrollWidth;
      yScroll = window.innerHeight + window.scrollMaxY;
  } else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
      xScroll = document.body.scrollWidth;
      yScroll = document.body.scrollHeight;
  } else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
      xScroll = document.body.offsetWidth;
      yScroll = document.body.offsetHeight;
  }
  var windowWidth, windowHeight;
  if (self.innerHeight) {	// all except Explorer
      windowWidth = self.innerWidth;
      windowHeight = self.innerHeight;
  } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
      windowWidth = document.documentElement.clientWidth;
      windowHeight = document.documentElement.clientHeight;
  } else if (document.body) { // other Explorers
      windowWidth = document.body.clientWidth;
      windowHeight = document.body.clientHeight;
  }	
  if(yScroll < windowHeight){
      pageHeight = windowHeight;
  } else { 
      pageHeight = yScroll;
  }
  if(xScroll < windowWidth){	
      pageWidth = windowWidth;
  } else {
      pageWidth = xScroll;
  }
  arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
  return arrayPageSize;
}