function objGet(x) {
   if (typeof x != 'string') return x;
   else if (Boolean(document.getElementById))
      return document.getElementById(x);
   else if (Boolean(document.all))
      return eval('document.all.'+x);
   else if (Boolean(document.ids))
      return eval('document.ids.'+x);
   else
      return null;
}

function show(oddil) {
			objDI = objGet('DI');
			objDII = objGet('DII');
			objDIII = objGet('DIII');
			if (oddil == 'DI') {
				if (objDI.style.display == 'inline') {
					objDI.style.display = 'none'
					}
					else
					{
					objDI.style.display = 'inline';
					objDII.style.display = 'none';
					objDIII.style.display = 'none';
					}
			}
			if (oddil == 'DII') {
				if (objDII.style.display == 'inline') {
					objDII.style.display = 'none'
					}
					else
					{
					objDII.style.display = 'inline';
					objDI.style.display = 'none';
					objDIII.style.display = 'none';
					}
			}
			if (oddil == 'DIII') {
				if (objDIII.style.display == 'inline') {
					objDIII.style.display = 'none'
					}
					else
					{
					objDIII.style.display = 'inline';
					objDII.style.display = 'none';
					objDI.style.display = 'none';
					}
			}
		}


function smajlik(cislo)
{
obj = objGet('form1');
switch (cislo)
	{
	 case 1:
	 	cislo_smajlika=" :1: ";
		break;
	 case 2:
	 	cislo_smajlika=" :2: ";
		break;
	 case 3:
	 	cislo_smajlika=" :3: ";
		break;
	 case 4:
	 	cislo_smajlika=" :4: ";
		break;
	 case 5:
	 	cislo_smajlika=" :5: ";
		break;
	 case 6:
	 	cislo_smajlika=" :6: ";
		break;
	 case 7:
	 	cislo_smajlika=" :7: ";
		break;
	 case 8:
	 	cislo_smajlika=" :8: ";
		break;
	 case 9:
	 	cislo_smajlika=" :9: ";
		break;
	 case 10:
	 	cislo_smajlika=" :10: ";
		break;
	 case 11:
	 	cislo_smajlika=" :11: ";
		break;
	 case 12:
	 	cislo_smajlika=" :12: ";
		break;
	}
obj.text.value+=cislo_smajlika;
}

function checkForm()
{
obj = objGet('form1');
string = "";
filter = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})$/;
jmeno = obj.jmeno.value;
email = obj.email.value;
text = obj.text.value;
if ((!filter.test(email)) && (email != ""))
	{string = string + "Váš e-mail musí mít správný formát.\n";}
if (jmeno == "")
	{string = string + "Je třeba vyplnit jméno.\n";}
if (text == "")
	{string = string + "Je třeba vyplnit text zprávy.\n";}
if (string != "") {
	alert(string);
	return false
	}
else return true
}

function checkEmail()
{
string = "";
obj = objGet('form1');
filter = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})$/;
email = obj.email.value;
if ((!filter.test(email)) && (email != ""))
	{string = string + "Váš e-mail musí mít správný formát.\n";}
if (string != "") {
	alert(string);
	obj.email.value = "";
	return false
	}
else return true
}