function D(f,s){document.getElementById(f).style.display=s;};
function T(f,t){window.setTimeout('D(\"'+f+'\",\"none\");',t);};
//textbox
function AddTags(tag1,tag2)
{
if(document.selection)
{
f = document.getElementById("post_content");
f.focus();
var sel = document.selection.createRange();
sel.text = tag1 + sel.text + tag2;
}
else
{
var len = f.value.length;
var start = f.selectionStart;
var end = f.selectionEnd;
var scrollTop = f.scrollTop;
var scrollLeft = f.scrollLeft;
var sel = f.value.substring(start, end);
var rep = tag1 + sel + tag2;
textarea.value =  f.value.substring(0,start) + rep + f.value.substring(end,len);
f.scrollTop = scrollTop;
f.scrollLeft = scrollLeft;
}
};
function Link()
{
AddTags('<a href=\"'+prompt('','http://')+'\">', '</a>');
};
function Bold()
{
AddTags('<strong>','</strong>');
};
function Italic()
{
AddTags('<em>','</em>');
};
function Quote()
{
AddTags('<blockquote>','</blockquote>');
};
function ul()
{
AddTags('<ul>','</ul>');
};
function ol()
{
AddTags('<ol>','</ol>');
};
function li()
{
AddTags('<li>','</li>');
}