var myWidth = 0, myHeight = 0;
function ovShow(cnt) {
$('#ov').show();
$('#n_overlay').height(1);
switch(cnt) {
case 'film':
w = 690;
h = 416;
$('#ovcnt').html('');
break;
case 'mapka':
w = 690;
h = 416;
$('#ovcnt').html('');
break;
case 'panorama':
w = 690;
h = 416;
$('#ovcnt').html('');
break;
}
$('#n_overlay-content').css({'width':''+w+'px','height':''+h+'px'});
var mTop = -Math.round($('#n_overlay-content').height()/2);
var mLeft = -Math.round($('#n_overlay-content').width()/2);
var myWidth = 0, myHeight = 0;
if( typeof( window.innerWidth ) == 'number' ) {
//Non-IE
myWidth = window.innerWidth;
myHeight = window.innerHeight;
} else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
//IE 6+ in 'standards compliant mode'
myWidth = document.documentElement.clientWidth;
myHeight = document.documentElement.clientHeight;
} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
//IE 4 compatible
myWidth = document.body.clientWidth;
myHeight = document.body.clientHeight;
}
if( myHeight>$('#n_overlay-content').height() ) {
$('#n_overlay-content').css({'top':'50%','margin':''+mTop+'px 0 0 '+mLeft+'px'});
} else {
$('#n_overlay-content').css({'top':'0','margin':'0px 0 0 '+mLeft+'px'});
}
$('#n_overlay').height($(document).height());
}