/* modal.js - javascript to control the modal window */

/**
 * shows the modal window
 *
 * @return void
 * @author Tim Cromwell
 **/
function showModalWindow()
{
	scrollTo(0,0);
		
	// Get page sizes
	var arrPageSizes = getPageSize();
	
	// modify the height and width of the overlay
	$('div#modal_overlay').css({
		opacity: 0.75,
		width: arrPageSizes[0],
		height: arrPageSizes[1]
	}).fadeIn();
	
	// Hide some elements to avoid conflict with overlay in IE. These elements appear above the overlay.
	$('embed, object, select').css({ 'visibility' : 'hidden' });
	
	// show modal window and the content
	$('#modal_overlay, #modal_window').fadeIn();
		
	// Assigning click events in elements to close overlay
	$('#modal_overlay').click(function() {
		hideModalWindow();									
	});
	
	// replace cufon fonts
	cufonReplace();
}

/**
 * hides the modal window
 *
 * @return void
 * @author Tim Cromwell
 **/
function hideModalWindow()
{
	$('#modal_overlay, #modal_window').fadeOut();
	
	// Show some elements to avoid conflict with overlay in IE. These elements appear above the overlay.
	$('embed, object, select').css({ 'visibility' : 'visible' });
	
	// remove the content in the popup
	$('div#modal_window_dynamic_content').html('');
}



/**
 / THIRD FUNCTION
 * getPageSize() by quirksmode.com
 *
 * @return Array Return an array with page width, height and window width, height
 */
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;
};
/**
 / THIRD FUNCTION
 * getPageScroll() by quirksmode.com
 *
 * @return Array Return an array with x,y page scroll values.
 */
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;
};