.aboutus_1
{
    background:url(Image/slideshow/aboutus_1.jpg) no-repeat;
    width:790px;
    height:135px;
}
.aboutus_2
{
    background:url(Image/slideshow/aboutus_2.jpg) no-repeat;
    width:790px;
    height:135px;
}
.aboutus_3
{
    background:url(Image/slideshow/aboutus_3.jpg) no-repeat;
    width:790px;
    height:135px;
}
.aboutus_4
{
    background:url(Image/slideshow/aboutus_4.jpg) no-repeat;
    width:790px;
    height:135px;
}
.aboutus_5
{
    background:url(Image/slideshow/aboutus_5.jpg) no-repeat;
    width:790px;
    height:135px;
}
.aboutus_6
{
    background:url(Image/slideshow/aboutus_6.jpg) no-repeat;
    width:790px;
    height:135px;
}

.clad_banner1
{
    background:url(Image/slideshow/clad_banner1.jpg) no-repeat;
    width:790px;
    height:135px;
}
.clad_banner2
{
    background:url(Image/slideshow/clad_banner2.jpg) no-repeat;
    width:790px;
    height:135px;
}
.clad_banner3
{
    background:url(Image/slideshow/clad_banner3.jpg) no-repeat;
    width:790px;
    height:135px;
}

.excel_banner1
{
    background:url(Image/slideshow/excel_banner1.jpg) no-repeat;
    width:790px;
    height:135px;
}
.excel_banner2
{
    background:url(Image/slideshow/excel_banner2.jpg) no-repeat;
    width:790px;
    height:135px;
}
.excel_banner3
{
    background:url(Image/slideshow/excel_banner3.jpg) no-repeat;
    width:790px;
    height:135px;
}

.sddc_banner1
{
    background:url(Image/slideshow/sddc_banner1.jpg) no-repeat;
    width:790px;
    height:135px;
}
.sddc_banner2
{
    background:url(Image/slideshow/sddc_banner2.jpg) no-repeat;
    width:790px;
    height:135px;
}
.sddc_banner3
{
    background:url(Image/slideshow/sddc_banner3.jpg) no-repeat;
    width:790px;
    height:135px;
}

.flash_banner1
{
    width:800px;
    height:190px;
    z-index:0;
}