$(document).ready(function()
{ 
	$("#login").hide();

	var windows	= getPageSize();
	var body_height = windows[3];
	var body_width = windows[2];
	var bodybackground_height = windows[1];
	
	var top_height = (body_height-400)/2;
	var left_width = (body_width-400)/2;

	$(".body_background").height(bodybackground_height);

	$("#loginform").css("display", "block");
	$("#loginform").css("left", left_width);
	$("#loginform").css("right", left_width);	
	$("#loginform").css("top", top_height);


	 $("#login_close").click(function ()
	 {
		$("#loginform").hide();
		$(".body_background").hide();
	 });

	 $("#opvragen").click( function() 
		{
			var lidnr = $("#lidnr").attr("value");

			 $.ajax({
			   type: "POST",
			   url: "opvragen.asp",
			   data: "lidnr=" + lidnr + "",
			   success: function(msg){

				   $("#error").append(msg);
				   $("#login_form").empty();
			   }
			 });


			return false; 
		});

});

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;
}