function EmailCheck()
{
    if (window.RegExp)
    {
        znaky=new RegExp("^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,3}$");
        if (!znaky.test(formular.email.value))
        {
            return false;
        }
    }
}

function isValidForm()
{
		var form=document.getElementById('order');

		message = '';
    valid   = true;

    if(form.name.value == ''){
        message = message + "Nezadali ste meno!\n";
        valid = false;
    }

    if(form.email.value == '@' || form.email.value == ''){
        message = message + "Nezadali ste emailovú adresu!\n";
        valid = false;
    } else if (window.RegExp){
        chars=new RegExp("^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,4}$");
        if (!chars.test(form.email.value))
        {
            message = message + "Nezadali ste platnú emailovú adresu!\n";
            valid = false;
        }
    }

    if(form.street.value == ''){
        message = message + "Nezadali ste ulicu!\n";
        valid = false;
    }

    if(form.city.value == ''){
        message = message + "Nezadali ste mesto!\n";
        valid = false;
    }

    if(form.postcode.value == ''){
        message = message + "Nezadali ste PSČ!\n";
        valid = false;
    } else if (window.RegExp){
        chars=new RegExp("^[ 0-9]{5,6}$");
        if (!chars.test(form.postcode.value))
        {
            message = message + "Nezadali ste platné PSČ!\n";
            valid = false;
        }
    }

    if(form.phone.value == '+421' || form.phone.value == ''){
        message = message + "Nezadali ste telefón!\n";
        valid = false;
    } else if (window.RegExp){
        chars=new RegExp("^[ 0-9\.\+\/\-]{6,}$");
        if (!chars.test(form.phone.value))
        {
            message = message + "Nezadali ste platné telefónne číslo!\n";
            valid = false;
        }
    }

		if(!valid)
		{
        alert(message);
		}

    return valid;
}

function imagePreview(path,width,height)
{
      if(navigator.appVersion.indexOf('MSIE') >= 0)
      {
            window=open(path,'DisplayWindow','width='+ width*1.11 +',height='+ height*1.11 +',toolbar=no,directories=no,menubar=no,scrollbars=yes');
      } else {
            window=open(path,'DisplayWindow','width='+ width*1.01 +',height='+ height*1.01 +',toolbar=no,directories=no,menubar=no,scrollbars=yes');
      }
      
}