var pageDialogID = "pagedialog";
function showPageWindow(page, title, vars){
	window.open(page,title,vars);
}
function closePageDialog(){
    //showFlash();
	document.getElementById('cover').style.visibility = "hidden";
	document.getElementById('cover').style.width = "0px";
	document.getElementById('cover').style.height = "0px";
	document.getElementById(pageDialogID).style.visibility = "hidden";
}
function showPageDialog(frameWidth, frameHeight){
	//define height and width of popup frame
	if(frameWidth==null){
		frameWidth = 400;
	}
	if(frameHeight==null){
		frameHeight = 525;
	}

	// stretch overlay to fill page and fade in
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();

    
	var cover = document.getElementById('cover');
	cover.style.width = arrayPageSize[2]+arrayPageScroll[0]+'px';
	cover.style.height = arrayPageSize[1]+arrayPageScroll[1]+'px';
	cover.style.visibility = "visible";
	
	
	var frame = document.getElementById(pageDialogID);
	
	//Define width of border
	var border = 5;
	
	var boxTop = arrayPageScroll[1] + 30;
	//top and left corners are based size of viewable area
	var boxLeft = arrayPageScroll[0] + Math.round(arrayPageSize[2] / 2) - border;

	if(boxLeft > frameWidth/2){ boxLeft -= Math.round(frameWidth/2);}
	if(boxTop > frameHeight/2){ boxTop -= Math.round(frameHeight/2);}
	frame.style.top = boxTop + 'px';
	frame.style.left = boxLeft + 'px';
	frame.style.height = frameHeight + 'px';
	frame.style.width = frameWidth + 'px';

	//hideFlash();
	frame.style.visibility = 'visible';
}
// -------------------------------------------------
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.com
// Edit for Firefox by pHaez
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = window.innerWidth + window.scrollMaxX;
		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
		if(document.documentElement.clientWidth){
			windowWidth = document.documentElement.clientWidth; 
		} else {
			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 = xScroll;		
	} else {
		pageWidth = windowWidth;
	}
	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}
// ---------------------------------------------
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.com
function getPageScroll(){

	var xScroll, yScroll;

	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
		xScroll = self.pageXOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
		xScroll = document.documentElement.scrollLeft;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
		xScroll = document.body.scrollLeft;	
	}

	arrayPageScroll = new Array(xScroll,yScroll) 
	return arrayPageScroll;
}
// ---------------------------------------------------
function showFlash(){
	var flashObjects = document.getElementsByTagName("object");
	for (i = 0; i < flashObjects.length; i++) {
		flashObjects[i].style.visibility = "visible";
	}

	var flashEmbeds = document.getElementsByTagName("embed");
	for (i = 0; i < flashEmbeds.length; i++) {
		flashEmbeds[i].style.visibility = "visible";
	}
}
// ---------------------------------------------------
function hideFlash(){
	var flashObjects = document.getElementsByTagName("object");
	for (i = 0; i < flashObjects.length; i++) {
		flashObjects[i].style.visibility = "hidden";
	}

	var flashEmbeds = document.getElementsByTagName("embed");
	for (i = 0; i < flashEmbeds.length; i++) {
		flashEmbeds[i].style.visibility = "hidden";
	}

}