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;
}

function update_overlay(){
	var objOverlay = document.getElementById('overlay');
	
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();
	
	objOverlay.style.height = (arrayPageSize[1] + 'px');
	objOverlay.style.display = 'block';
}
function showLightbox(data)
{
	var objOverlay = document.getElementById('overlay');
	var objLightbox = document.getElementById('lightbox');
	var objData = document.getElementById('dataBox');
	
	selects = document.getElementsByTagName("select");
    for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "hidden";
	}
	
	objData.innerHTML = data;
	
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();
	
	
	objOverlay.style.height = (arrayPageSize[1] + 'px');
	objOverlay.style.display = 'block';
	
	var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - 500) / 2);
	var lightboxLeft = ((arrayPageSize[0] - 20 - 500) / 2);
	
	objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px";
	objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px";
	objLightbox.style.display = '';
}

function showLightbox2(data, Obj_gen)
{
	var objOverlay = document.getElementById('overlay2');
	var objLightbox = document.getElementById('lightbox2');
	var objData = document.getElementById('dataBox2');
	
	selects = document.getElementsByTagName("select");
    for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "hidden";
	}
	
	objData.innerHTML = data
		
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();
	
	objOverlay.style.height = (arrayPageSize[1] + 'px');
	objOverlay.style.display = 'block';
	
	var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - 600) / 2);
	var lightboxLeft = ((arrayPageSize[0] - 20 - 700) / 2);
	
	objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px";
	objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px";
	objLightbox.style.display = '';
	if(Obj_gen!=''){
		document.getElementById(Obj_gen).focus();
	}
}

function hideLightbox()
{
	objOverlay = document.getElementById('overlay');
	objLightbox = document.getElementById('lightbox');	
	objOverlay.style.display = 'none';
	objLightbox.style.display = 'none';
	
	selects = document.getElementsByTagName("select");
    for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "visible";
	}

	document.onkeypress = '';
}

function hideLightbox2()
{
	objOverlay = document.getElementById('overlay2');
	objLightbox = document.getElementById('lightbox2');
	
	objOverlay.style.display = 'none';
	objLightbox.style.display = 'none';
	
	selects = document.getElementsByTagName("select");
    for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "visible";
	}

	document.onkeypress = '';
}

function initLightbox(){
	var objBody = document.getElementsByTagName("body").item(0);
	var objOverlay = document.createElement("div");
	objOverlay.setAttribute('id','overlay');
	objOverlay.style.display = 'none';
	objOverlay.style.position = 'absolute';
	objOverlay.style.top = '0';
	objOverlay.style.left = '0';
	objOverlay.style.zIndex = '90';
 	objOverlay.style.width = '100%';
	objBody.insertBefore(objOverlay, objBody.firstChild);
	
	var objLightbox = document.createElement("div");
	objLightbox.setAttribute('id','lightbox');
	objLightbox.style.display = 'none';
	objLightbox.style.position = 'absolute';
	objLightbox.style.zIndex = '100';
	
	var objClose = document.createElement("div");
	objClose.setAttribute('id','closeBox');
	var objCloseButton = document.createElement("img");
	objCloseButton.src = './img/close_window.gif';
	objCloseButton.setAttribute('id','closeButton');
	objCloseButton.setAttribute('title','Close This PopUp.');
	objCloseButton.onclick = function () {hideLightbox(); return false;}
	objCloseButton.style.zIndex = '200';
	
	var objData = document.createElement("div");
	objData.setAttribute('id','dataBox');
	objData.style.zIndex = '200';
	var objClr = document.createElement("div");
	objClr.setAttribute('class','clr');
	objClr.style.zIndex = '200';
	
	objClose.appendChild(objCloseButton);
	objLightbox.appendChild(objClose);
	objLightbox.appendChild(objData);
	objLightbox.appendChild(objClr);
	objBody.insertBefore(objLightbox, objOverlay.nextSibling);
	initLightbox2();
}

function initLightbox2(){
	var objBody = document.getElementsByTagName("body").item(0);
	
	var objOverlay = document.createElement("div");
	objOverlay.setAttribute('id','overlay2');
	objOverlay.style.display = 'none';
	objOverlay.style.position = 'absolute';
	objOverlay.style.top = '0';
	objOverlay.style.left = '0';
	objOverlay.style.zIndex = '500';
 	objOverlay.style.width = '100%';
	objBody.insertBefore(objOverlay, objBody.firstChild);
	
	var objLightbox = document.createElement("div");
	objLightbox.setAttribute('id','lightbox2');
	objLightbox.style.display = 'none';
	objLightbox.style.position = 'absolute';
	objLightbox.style.zIndex = '510';
	
	var objClose = document.createElement("div");
	objClose.setAttribute('id','closeBox2');
	
	var txtNode = document.createTextNode("Message Management.");
	
	var objCloseButton = document.createElement("img");
	objCloseButton.src = './img/closelabel.png';
	objCloseButton.setAttribute('id','closeButton2');
	objCloseButton.setAttribute('title','Close This PopUp.');
	objCloseButton.onclick = function () {hideLightbox2(); return false;}
	objCloseButton.style.zIndex = '520';
	
	var objData = document.createElement("div");
	objData.setAttribute('id','dataBox2');
	objData.style.zIndex = '520';
	var objClr = document.createElement("div");
	objClr.setAttribute('class','clr');
	
	objClose.appendChild(txtNode);
	objClose.appendChild(objCloseButton);
	objLightbox.appendChild(objClose);
	objLightbox.appendChild(objData);
	objLightbox.appendChild(objClr);
	objBody.insertBefore(objLightbox, objOverlay.nextSibling);
}