function preview(filename, width, height)
{
preview_window = window.open('', '_blank', 'width=' + width + ',height=' + height);
preview_window.document.write('');
preview_window.document.write('
');
preview_window.document.write('');
preview_window.document.close();
}
function tagExternalLinks()
{
var anchors = document.getElementsByTagName('A');
for (var i = 0; i < anchors.length; i++)
{
if (anchors[i].rel == 'external')
{
anchors[i].onclick = function() { return confirm('You will now leave this website, are you sure?'); }
}
}
}
function qs_replace(qs, name, value)
{
name = name.toLowerCase();
qs = qs.toLowerCase();
loc = qs.indexOf('?' + name + '=') + 1;
if (loc == 0)
loc = qs.indexOf('&' + name + '=') + 1;
var t;
if (loc == 0)
{
// simplest case, the attribute does not exist in the qs
if (value.length)
{
if (qs.length)
t = qs + '&' + name + '=' + escape(value);
else
t = qs + name + '=' + escape(value);
}
else t = qs;
}
else
{
end_loc = qs.substr(loc, qs.length).indexOf('&') + loc;
t = '';
// if not the first item in the list, prepend the start of the list
if (loc > 1)
t += qs.substr(0, loc);
if (value && value.length)
t += name + '=' + escape(value);
// if not the last item in the list, append the rest of the list
if (end_loc > loc)
t += qs.substr(end_loc);
}
while (t.indexOf('&&') != -1)
t = t.replace('&&', '&');
while (t.substr(t.length - 1) == '&')
t = t.substr(0, t.length - 1);
while (t.substr(t.length - 1) == '?')
t = t.substr(0, t.length - 1);
return t;
}
function sn_replace(sn, name, value)
{
name = name.toLowerCase();
sn = sn.toLowerCase();
loc = sn.indexOf('?' + name + '=') + 1;
if (loc == 0)
loc = sn.indexOf('&' + name + '=') + 1;
if (!value) value = '';
value = value + '';
var t;
if (loc == 0)
{
// simplest case, the attribute does not exist in the sn
if (value.length)
{
if (sn.length && (sn.indexOf('?') != -1))
{
t = sn + '&' + name + '=' + escape(value);
}
else if (sn.indexOf('?') == sn.length - 1)
t = sn + name + '=' + escape(value);
else
t = sn + '?' + name + '=' + escape(value);
}
else
t = sn;
}
else
{
end_loc = sn.substr(loc, sn.length).indexOf('&') + loc;
t = '';
// if not the first item in the list, prepend the start of the list
if (loc > 1)
t += sn.substr(0, loc);
if (value.length)
t += name + '=' + escape(value);
// if not the last item in the list, append the rest of the list
if (end_loc > loc)
t += sn.substr(end_loc);
}
while (t.indexOf('&&') != -1)
t = t.replace('&&', '&');
while (t.substr(t.length - 1) == '&')
t = t.substr(0, t.length - 1);
while (t.substr(t.length - 1) == '?')
t = t.substr(0, t.length - 1);
return t;
}
function checkboxes_value(form, name)
{
v = '';
el = form.elements[name];
if (!el) return '';
if (!el.length && el.checked)
v = el.value;
else
{
for (i=0; i < el.length; i++)
{
if (el[i].checked)
v += el[i].value + ',';
}
v = v.substring(0, v.length - 1);
}
return v;
}
function validateEmail(str)
{
try
{
var regex = /^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
return regex.test(str);
}
catch(er)
{
return true;
}
}
function isWhitespace(str)
{
try
{
var regex = /^\s+$/;
return regex.test(str);
}
catch(er)
{
return true;
}
}