// Generall javascript functions

// Javascript getCookie function
function getCookie(c_name)
{
	if (document.cookie.length>0) {
  		c_start=document.cookie.indexOf(c_name + "=")
		if (c_start!=-1) { 
			c_start=c_start + c_name.length+1 
    			c_end=document.cookie.indexOf(";",c_start)
    			if (c_end==-1) c_end=document.cookie.length
    			return unescape(document.cookie.substring(c_start,c_end))
    		} 
  	}
	return ""
}

// Javascript setCookie function
function setCookie( name, value, path, domain, expires, secure ) 
{
	var today = new Date();
	today.setTime( today.getTime() );

	if ( expires )
	{
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );

	document.cookie = name + "=" +escape( value ) +
	( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + 
	( ( path ) ? ";path=" + path : "" ) + 
	( ( domain ) ? ";domain=" + domain : "" ) +
	( ( secure ) ? ";secure" : "" );
}

// Javascript deleteCookie function
function deleteCookie( name, path, domain ) {
	if ( getCookie( name ) ) document.cookie = name + "=" +
	( ( path ) ? ";path=" + path : "") +
	( ( domain ) ? ";domain=" + domain : "" ) +
	";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

// Javascript function to check if the user is logged in
function checkLogin(){

	if (getCookie("wbg-usr")=="") {
		var lang = getCookie('wbg-lan');
		if (lang == '') { lang = 'en' };
		location.href = webDbPath + "vapl/$user-login-required~" + lang;
	}
}

// Javascript function to log a user out
function logout() {
	deleteCookie("wbg-usr", "/");
	deleteCookie("wbg-usr-id", "/");
	deleteCookie("wbg-usr-disp", "/");
	deleteCookie("wbg-al", "/");
	deleteCookie("wbg-ut", "/");
	deleteCookie("wbg-lan", "/");	
	location.reload();
}

var windowHeight = 0;
var windowWidth = 0;
var imageHeight = 0;
var imageWidth = 0;

function openImageDialog() {

	document.getElementById("imageDialog").style.display = "block";
	
	if (window.innerHeight) {
		imageHeight = window.innerHeight;
		imageWidth = window.innerWidth;
	}
	else if (document.documentElement.clientHeight) {
		imageHeight = document.documentElement.clientHeight;
		imageWidth = document.documentElement.clientWidth;
	}
	else if (document.body.clientHeight) {
		imageHeight = document.body.clientHeight;
		imageWidth = document.body.clientWidth;
	}
	
		document.getElementById("currentImage").style.maxHeight = ( imageHeight - 130 ) + "px";
		document.getElementById("currentImage").style.maxWidth = ( imageWidth - 130 ) + "px";
	
	
	$("#imageDialog").dialog({
	modal: true,
	bgiframe: true,
	position: 'top',
	height: (document.getElementById("currentImage").height + 50),	
	width: (document.getElementById("currentImage").width + 50),	
	overlay: {
		backgroundColor: '#000',
		opacity: 0.75
		}
	});
	$("#imageDialog").dialog("open");
	
}