// JavaScript Document

function toggle(div_id) {

	var el = document.getElementById(div_id);

	if ( el.style.display == 'none' ) {	el.style.display = 'block';}

	else {el.style.display = 'none';}

}

function blanket_size(popUpDivVar) {

	if (typeof window.innerWidth != 'undefined') {

		viewportheight = window.innerHeight;

	} else {

		viewportheight = document.documentElement.clientHeight;

	}

	if ((viewportheight > document.body.parentNode.scrollHeight) && (viewportheight > document.body.parentNode.clientHeight)) {

		blanket_height = viewportheight;

	} else {

		if (document.body.parentNode.clientHeight > document.body.parentNode.scrollHeight) {

			blanket_height = document.body.parentNode.clientHeight;

		} else {

			blanket_height = document.body.parentNode.scrollHeight;

		}

	}

	var blanket = document.getElementById('blanket');

	blanket.style.height = blanket_height + 'px';

	var popUpDiv = document.getElementById(popUpDivVar);

	popUpDiv_height=blanket_height/2-250;//150 is half popup's height

	popUpDiv.style.top = 20 + 'px';

}

function window_pos(popUpDivVar) {

	if (typeof window.innerWidth != 'undefined') {

		viewportwidth = window.innerHeight;

	} else {

		viewportwidth = document.documentElement.clientHeight;

	}

	if ((viewportwidth > document.body.parentNode.scrollWidth) && (viewportwidth > document.body.parentNode.clientWidth)) {

		window_width = viewportwidth;

	} else {

		if (document.body.parentNode.clientWidth > document.body.parentNode.scrollWidth) {

			window_width = document.body.parentNode.clientWidth;

		} else {

			window_width = document.body.parentNode.scrollWidth;

		}

	}

	var popUpDiv = document.getElementById(popUpDivVar);

	window_width=window_width/2-325;//150 is half popup's width

	popUpDiv.style.left = window_width + 'px';

}



function csspopup(windowname) {

	

	blanket_size(windowname);

	window_pos(windowname);

	toggle('blanket');

	toggle(windowname);		

}

function closePopup() {

	document.getElementById('blanket').style.display = 'none';

	document.getElementById('popUpDiv').style.display = 'none';		

}