//SCROLL TO TOP
//
//Use: Call function goto_top()
var goto_top_type = -1;
var goto_top_itv = 0;

function goto_top_timer() {
var y = goto_top_type == 1 ? document.documentElement.scrollTop : document.body.scrollTop;
//alert(y);
var moveby = 15; // set this to control scroll seed. minimum is fast

y -= Math.ceil(y * moveby / 100);
if (y < 0)
y = 0;

if (goto_top_type == 1)
document.documentElement.scrollTop = y;
else
document.body.scrollTop = y;

if (y == 0) {
clearInterval(goto_top_itv);
goto_top_itv = 0;
}
}

function goto_top() {
if (goto_top_itv == 0) {
if (document.documentElement && document.documentElement.scrollTop)
goto_top_type = 1;
else if (document.body && document.body.scrollTop)
goto_top_type = 2;
else
goto_top_type = 0;

if (goto_top_type > 0)
goto_top_itv = setInterval('goto_top_timer()', 25);
}
}




function hide(id) {
var hideDiv = document.getElementById(id);

	if (document.getElementById)
        { // DOM3 = IE5, NS6
        if (hideDiv.style.display == 'none')
            {
    		hideDiv.style.display = 'block';
            }
        else
            {
    		hideDiv.style.display = 'none';
            }
	    }


}


//--------------------------------dynamic texarea------------------------
function size(t) {
a = t.value.split('\n');
b=1;
for (x=0;x < a.length; x++) {
 if (a[x].length >= t.cols) b+= Math.floor(a[x].length/t.cols);
 }
b+= a.length;
if (b > t.rows) t.rows = b;
}


// ----------------------------------- SELECT REZERCVACIA ---------------------------------------
function select_rezervacia(name, id) {
    var s1 = document.getElementById(name);

    if (0 == s1.selectedIndex)
    {
    document.getElementById('vek1').style.display = 'none';
    document.getElementById('vek2').style.display = 'none';
    document.getElementById('vek3').style.display = 'none';
    document.getElementById('vek4').style.display = 'none';
    document.getElementById('vek5').style.display = 'none';
    }
    else if (1 == s1.selectedIndex)
    {
    document.getElementById('vek1').style.display = 'block';
    document.getElementById('vek2').style.display = 'none';
    document.getElementById('vek3').style.display = 'none';
    document.getElementById('vek4').style.display = 'none';
    document.getElementById('vek5').style.display = 'none';
    }
    else if (2 == s1.selectedIndex)
    {
    document.getElementById('vek1').style.display = 'block';
    document.getElementById('vek2').style.display = 'block';
    document.getElementById('vek3').style.display = 'none';
    document.getElementById('vek4').style.display = 'none';
    document.getElementById('vek5').style.display = 'none';
    }
    else if (3 == s1.selectedIndex)
    {
    document.getElementById('vek1').style.display = 'block';
    document.getElementById('vek2').style.display = 'block';
    document.getElementById('vek3').style.display = 'block';
    document.getElementById('vek4').style.display = 'none';
    document.getElementById('vek5').style.display = 'none';
    }
    else if (4 == s1.selectedIndex)
    {
    document.getElementById('vek1').style.display = 'block';
    document.getElementById('vek2').style.display = 'block';
    document.getElementById('vek3').style.display = 'block';
    document.getElementById('vek4').style.display = 'block';
    document.getElementById('vek5').style.display = 'none';
    }
    else if (5 == s1.selectedIndex)
    {
    document.getElementById('vek1').style.display = 'block';
    document.getElementById('vek2').style.display = 'block';
    document.getElementById('vek3').style.display = 'block';
    document.getElementById('vek4').style.display = 'block';
    document.getElementById('vek5').style.display = 'block';
    }

}