function PopupPic(sPicURL) {
      window.open( "popup.htm?"+sPicURL, "", "resizable=1,HEIGHT=200,WIDTH=200");
}

form_submitted=false

function ValidateRequestForm(formName)
{
	if(formName.name.value=='') {
		alert('Není vyplněno pole \'Vaše jméno\'')
		formName.name.focus()
		form_submitted=false
		return false
	}
	
	if(formName.phone.value == '' && ValidateEmail(formName.email) == false) {
		alert('Musíte zadat telefon nebo e-mail')
		formName.phone.focus()
		form_submitted=false
		return false
	}
	
	if(formName.message.value=='') {
		alert('Není vyplněno pole \'Zpráva\'')
		formName.message.focus()
		form_submitted=false
		return false
	}

	return true
}

// validate email format
function ValidateEmail(theinput)
{
	s=theinput.value
	if(s.search)
	{
		return (s.search(new RegExp("^([-!#$%&'*+./0-9=?A-Z^_`a-z{|}~])+@([-!#$%&'*+/0-9=?A-Z^_`a-z{|}~]+\.)+[a-zA-Z]{2,4}$","gi"))>=0)
	}
	if(s.indexOf)
	{
		at_character=s.indexOf('@')
		if(at_character<=0 || at_character+4>s.length)
			return false
	}
	if(s.length<6)
		return false
	else
		return true
}