function findPos() {
	 var browser = navigator.appName;
	 var version = navigator.appVersion.substring(0,1);
	 var subversion = navigator.appVersion.substring(2,4)*1;
obj = document.getElementById("mainpanel");
d = document.getElementById("pozice");
winHeight = document.documentElement.clientHeight;
if (browser=='Opera' &  version=='9' & subversion<50 ) {
	winHeight = document.body.clientHeight;
}		
//alert(winHeight);
a=winHeight;
if(d.offsetTop<a) {
	b=a-190;
obj.style.height=''+b+'px';
}
}