Ya me dí una leída por aquí; pero aún no logro confabular este código. Al dar click en cerrar sesión debe hacer un gray scale. Si cambio el doctype a alguno delos que indica ahí, se logra el grayscale del documento pero no se logran ver los bordes de los tabs. O es uno o es otro.
:
Código:
<!--
.....¿CUÁL DE ESTAS USO?.........
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!DOCTYPE html PUBLIC "-//W3C//DTD xHTML 4.0 Transitional//EN">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
//-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>Log Out</title>
<script type="text/javascript">
<!--
function log_out()
{
ht = document.getElementsByTagName("html");
ht[0].style.filter = "progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)";
if (confirm('Are you sure you want to log out?'))
{
return true;
}
else
{
ht[0].style.filter = "";
return false;
}
}
//-->
</script>
<style>
.TabTable {border-width:0px;margin-top:5px;}
.TabTdLeft {width:0px;border-width:0px;border-bottom-width:1px;border-color:#EFEFEF;border-style:solid;}
.TabTdOn {background-color:#FCFCFC;padding:4px;border-width:1px;border-bottom-width:0px;border-color:#DEDEDE;border-style:solid;}
.TabTd {background-color:#FFFFFF;padding:4px;border-width:1px;border-color:#EFEFEF;border-style:solid;}
.TabTdDiv {width:5px;border-width:0px;border-bottom-width:1px;border-color:#EFEFEF;border-style:solid;}
.TabTdRight {width:28%;border-width:0px;border-bottom-width:1px;border-color:#EFEFEF;border-style:solid;}
.TabFont {color:#666666;}
.PanelTable {margin-left:4px;margin-top:0px;background-color:#FCFCFC;height:90%;border-width:0px;}
.PanelTd {background-color:;padding:1px;border-width:1px;border-top-width:0px;border-color:#DEDEDE;border-style:solid;}
</style>
<script type="text/javascript">
<!--
function log_out()
{
ht = document.getElementsByTagName("html");
ht[0].style.filter = "progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)";
if (confirm('¿Esta seguro de salir?'))
{
return true;
}
else
{
ht[0].style.filter = "";
return false;
}
}
//-->
</script>
</head>
<body>
<input type="submit" class="mainoption" name="login" value="Cerrar Sesión" onclick="return log_out()" style="float: right"><p> <script language="javascript">
var tabs = new Array("general", "newcontent_row", "cat");
function tabium(elementname) {
var element_id = document.getElementById(elementname);
for(var i=0;i<tabs.length;i++){
objHide = document.getElementById(tabs[i]);
objHide.style.display="none";
objHideTab = document.getElementById("Tab"+i);
objHideTab.className = "TabTD";
if (elementname == tabs[i]) {
objHideTab.className = "TabTDOn";
}
}
element_id.style.display="";
}
</script></p>
</p>
<table class="TabTable">
<tr>
<td class="TabTDLeft"> </td>
<td id="Tab0" class="TabTDOn"><A class="TabFont" href='javascript:void(0);' onclick="tabium('general');">
<font color="#99CCFF">Welcome</font></A></td>
<td class="TabTDDiv"> </td>
<td id="Tab1" class="TabTDOn"><A class="TabFont" href='javascript:void(0);' onclick="tabium('newcontent_row');">Hola</A></td>
<td class="TabTDDiv"> </td>
<td id="Tab2" class="TabTDOn"><A class="TabFont" href='javascript:void(0);' onclick="tabium('cat');">Clasificados</A></td>
<td class="TabTDRight"> </td>
</tr>
</table>
<table class="PanelTable">
<tr>
<td class="PanelTD">
<div id='general'>
Hola esta es la bienvenidaHola esta es la bienvenidaHola esta es la bienvenidaHola esta es la bienvenidaHola esta es la bienvenida
</div>
<div id='newcontent_row'>
Hola a todos
</div>
<div id='cat'>
Y ESTAS LA CATEGRIASLA CATEGRIASLA CATEGRIASLA CATEGRIASLA CATEGRIASLA CATEGRIASLA CATEGRIAS
</div>
</td>
</tr>
</table>
<p>
</p>
<p> </p>
<script language="javascript">
// hide all except 1st tab
for(var i=1;i<tabs.length;i++){
objHide = document.getElementById(tabs[i]);
objHideTab = document.getElementById("Tab"+i);
objHide.style.display = "none";
objHideTab.className = "TabTD";
}
</script>
</body>
</html>
Saludos 
