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 showWaitOverlay(overlayid) {
		var arrayPageSize = getPageSize();
		var ov = $(overlayid);
		var arrayPageScroll = getPageScroll();
		var ovheight = parseInt(ov.style.height);
		var ovwidth = parseInt(ov.style.width);
		var lightboxTop = arrayPageScroll[1] + (Number(arrayPageSize[3]) / 2) - (ovheight/2);
		var lightboxLeft = arrayPageScroll[0] + (Number(arrayPageSize[2]) / 2) - (ovwidth/2);
		//ov.style.top = lightboxTop + "px";	
		//ov.style.left = lightboxLeft + "px";
		ov.style.display = "block";
		var ovo = $(overlayid + "_outer");
		ovo.style.display = "block";
		var cover = $("cover");
		cover.style.display = "block";
		//new Effect.Appear('overlayBox', {duration:1, from:0, to:1.0});

}

function closeme(overlayid) {
		var ovo = $(overlayid + "_outer");
		ovo.style.display = "none";
	var ov = $(overlayid);
	ov.style.display = "none";
	var cover = $("cover");
		cover.style.display = "none";
}

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;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}

	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}