function zmena1 ()
{

if (document.Center.Okraj.checked == false)
{
document.Center.Okr1.disabled = true
document.Center.Okr2.disabled = true
document.Center.SOkr.disabled = true
}
if (document.Center.Okraj.checked == true)
{
document.Center.Okr1.disabled = false
document.Center.Okr2.disabled = false
document.Center.SOkr.disabled = false
document.Center.SOkr.value = "1"
}

}

function zmena2 ()
{

if (document.Center.Okr1.checked == true) 
{
document.Center.Okr2.checked = false
}

}

function zmena3 ()
{

if (document.Center.Okr2.checked == true) 
{
document.Center.Okr1.checked = false
}

}

function nastroj(element1,panel) 
{
panel='<'+panel+'>'
vloz(element1,panel,'')
}


function smail(element1,obrazek) 
{
obrazek=' ::'+obrazek+')'
vloz(element1,obrazek,' ')
}

function vloz(element,startVal,endVal) 
{ 
var o = document.getElementById(element)
o.focus()
if (document.selection) 
{
sel = document.selection.createRange()
var selText = sel.text
sel.text = startVal + selText + endVal
} 
else if (o.selectionStart || o.selectionStart == '0')
{ 
var startPos = o.selectionStart
var endPos = o.selectionEnd
o.value = o.value.substring(0,startPos) + startVal + o.value.substring(startPos,endPos) + endVal + o.value.substring(endPos,o.value.length)
}
else { o.value += startVal + endVal }
}