var st,dw;
var fm,w;



function mpcheck() {
	if (document.documentElement.scrollTop!=st) {
		st = document.documentElement.scrollTop;
		fm.style.top = (st+340)+'px';
	}
	if (document.width!=dw) {
		dw = document.body.clientWidth;
		fm.style.left = (((dw-230)/2)-w)+'px';
	}
}

function mponload() {

	st = document.documentElement.scrollTop;
	dw = document.body.clientWidth;
	fm = document.getElementById('plovoucimenu');

	w = fm.clientWidth+0; // predtim 8

	fm.style.top = (st+340)+'px';
	fm.style.left = (((dw-230)/2)-w)+'px';
	
	fm.style.visibility = 'visible';

	window.setInterval("mpcheck()",1);
}

//******

if (window.attachEvent)
	window.attachEvent("onload",mponload);
else
	onload = mponload;