body {
background-color: #5577AA;
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 12px;
color: #000000;
}
a:link {
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 12px;
color: #660000;
text-decoration: none;
}
a:visited {
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 12px;
color: #000066;
text-decoration: none;
}

<!--New Code-->
#framecontent{
position: fixed;
top: 0;
bottom: 0; 
left: 0;
right: 0;
width: 250px; /*Width of frame div*/
height: ;
overflow: auto; /*Disable scrollbars. Set to "scroll" to enable*/
background: yellow;
color: white;
}

#maincontent{
position: fixed;
top: 0;
bottom: 0; 
left: 200px; /*Set left value to WidthOfFrameDiv*/
right: 0;
width:;
height:100%;
overflow: auto; 
background: black;
color:navy;
}

.innertube{
margin: 10px; /*Margins for inner DIV inside each DIV (to provide padding)*/
}


<!--end new code-->

h1 {
font-family: Arial, Verdana; color: blue; font-size: 25pt;
}

h2 {
font-family: Arial, Verdana; color: black; font-size: 20pt;
}

h3 {
font-family: Arial, Verdana; color: black; font-size: 16pt;
}

h4 {
font-family: Arial, Verdana; color: black; font-size: 13pt;
}

h5 {
font-family: Arial, Verdana; color: black; font-size: 10pt;
}