function GetWindowWidth()
{
	var width = 0;
	if( typeof( window.innerWidth ) == 'number' ) 
	{//Non-IE
		width = window.innerWidth;
	} 
	else if( document.documentElement && ( document.documentElement.clientWidth
		|| document.documentElement.clientHeight ) ) 
	{//IE 6+ in 'standards compliant mode'
		width = document.documentElement.clientWidth;
	} 
	else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) 
	{//IE 4 compatible
		width = document.body.clientWidth;
	}
	return width;	
}

function GetWindowHeight()
{
	var height = 0;
	if( typeof( window.innerHeight ) == 'number' ) 
	{//Non-IE
		width = window.innerHeight;
	} 
	else if( document.documentElement && ( document.documentElement.clientWidth
		|| document.documentElement.clientHeight ) ) 
	{//IE 6+ in 'standards compliant mode'
		height = document.documentElement.clientHeight;
	} 
	else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) 
	{//IE 4 compatible
		height = document.body.clientHeight;
	}
	return height;	
}

function ResizeW(corr)
{
	if ( corr == null )
		corr = 25;
	var width = GetWindowWidth();
	if ( typeof(maxwidth) != "undefined" )
		if ( width > maxwidth )
			return;
	if( control )
	{
		control.width = width - corr;
	}
	if ( typeof(control2) != "undefined" )
		if( control2 )
		{
			control2.width = width - corr;
		}
}

function ResizeH()
{
	var height = GetWindowHeight();
	if ( typeof(maxheight) != "undefined" )
		if ( height > maxheight )
			return;
	if( control )
	{
		control.height = height - 20;
	}
	if ( typeof(control2) != "undefined" )
		if( control2 )
		{
			control2.height = height - 20;
		}
}

function KeyDownHandler(evt, btn)
{
	if ( evt.keyCode == 13 )
	{
		evt.returnValue=false;
		evt.cancel = true;
		__doPostBack(btn,'');
	}
}

function createCookie(name,value,days)
{
	var expires = "";
	if (days)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		expires = "; expires="+date.toGMTString();
	}
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name)
{
	createCookie(name,"",-1);
}

function shiftOpacity(id, millisec) 
{
    if(document.getElementById(id).style.opacity == 0) 
    {
        opacity(id, 0, 100, millisec);
    } 
    else 
    {
        opacity(id, 100, 0, 0);
        opacity(id, 0, 100, millisec);
    }
}  
         
function opacity(id, opacStart, opacEnd, millisec) 
{ 
    var speed = Math.round(millisec / 100); 
    var timer = 0; 
    if(opacStart > opacEnd) 
    { 
        for(i = opacStart; i >= opacEnd; i--) 
        { 
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
            timer++; 
        } 
    } 
    else if(opacStart < opacEnd)
    { 
        for(i = opacStart; i <= opacEnd; i++) 
        { 
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
            timer++; 
        } 
    } 
} 

function changeOpac(opacity, id) 
{ 
    var object = document.getElementById(id).style; 
    object.opacity = (opacity / 100); 
    object.MozOpacity = (opacity / 100); 
    object.KhtmlOpacity = (opacity / 100); 
    object.filter = "alpha(opacity=" + opacity + ")"; 
}  

function HidePanel(crossobj, cookieName)
{
    crossobj.style.visibility = "Hidden";
	createCookie(cookieName,true,1);
}

function ShowPanel(crossobj, cookieName)
{
    crossobj.style.visibility = "Visible";
	createCookie(cookieName,true,1);
}
				
function PositionPanel(crossobj)
{
    if ( !crossobj )
	    return;
	var dsoctop = document.all ? document.body.scrollTop : pageYOffset;
	var dsocleft=document.all ? document.body.scrollLeft : pageXOffset;
	var window_width=document.all ? document.body.clientWidth : window.innerWidth;
	if (document.all||document.getElementById)
	{
	    crossobj.style.left=(parseInt(dsocleft)+parseInt(window_width)-parseInt(crossobj.style.width))/2;
		crossobj.style.top=dsoctop+405;
    }
	else if (document.layers)
	{
	    crossobj.left=dsocleft+window_width-parseInt(crossobj.width)-5;
		crossobj.top=dsoctop+305;
    }
}

function SetObjectMaxHeight(crossobj, linkButton)
{
    crossobj.style.height = "100%";
    linkButton.style.visibility = "Hidden";
}

function SetObjectHeight(crossobj, height)
{
    crossobj.style.height = height;
}

function RefreshParent(parentPage)
{
    window.parent.location.href = parentPage;
}

function textCounter(pocet,id_input,id_counter,warning) 
{
    var field = document.getElementById(id_input);
	var cntfield = document.getElementById(id_counter);
	if ( field.value.length <= pocet )
	{
	    cntfield.value = 'Zbývá ' + String(pocet - field.value.length)+' znaků.';
		if ( warning )
		{
		    cntfield.value += ' Tlačítkem "Vložit text" dokončíte změny.';
		}
	}
	else if ( warning )
	{
	    cntfield.value = 'Upozornění: text bude automaticky zalomen na další řádky.';
	}
	else
	{
	    field.value = field.value.substring(0,pocet);
	}
}