.Outer
{
    padding:40px 0px 0px 50px;
}
.Inter
{
    
}
.title1
{
    font-weight:bold;
    font-size:20px;
    text-align:left;
    width:600px;
    /*color:Black;*/
    border-bottom:solid 2px #b3b3aa;
    padding:0px 0px 5px 0px;
}
.Course_name
{
    padding:5px 5px 5px 5px;
    cursor:pointer;
    font-weight:bold;
}
.Course_content
{
    background-color:#e9e9e9;
    width:600px;
    padding:2px 0px 2px 5px;
}

.Course_Table
{
   /* background-color:#edeff4;*/
   /*border-bottom:solid 2px #b3b3aa;*/
}
.td1
{
    text-align:right;
}
.td2
{
    text-align:left;
}
.show_image
{
    text-align:center;
}
.Pic_Layout
{
    width:40px;
    height:50px;
}
.Content_List ul{
    height:800px;
    overflow:hidden;
    overflow-y:scroll;
}


<style>
#demo
{
background: #FFF;
overflow: hidden;
border: 1px solid #cdcdcd;
text-align: center;
float: left;
width: 200px;
height: 55px;
display:normal;
}
#demo img
{
border: 1px solid #cdcdcd;
display: block;
cursor:hand;
display:normal;
}

#preview{border:1px solid #cccccc; background:#333333; padding:5px; display:none; position:absolute;}

.NormalImage:hover
{
filter: alpha(opacity=50) !important;
filter: alpha(opacity=50);
opacity: 0.5;
}

</style>