.w{ width:100%;  background:url(images/bg.gif) top center }

.col1, .col2, .col3, .col4, .col2wide,.col1half,.col2half{ float:left}
/*======= width =======*/
.site_center{margin:0 auto; text-align:left; width:980px; }

/*======= header =======*/
#header {height:325px;  background:url(images/top3.jpg) no-repeat top center}

/*======= content =======*/
#content .col1{ width:297px}
#content .col2{ width:297px}
#content .col3{ width:288px}
#content .col2wide{ width:585px}
#content .col1half {width:441px }
#.content .col2half {width:441px}
/*======= index-3.html =======*/
#page4 .content{ background:url(images/bg_1.gif)}
#page4 .width1{ width:604px; float:left; }
#page4 #content .col3{ width:288px; float:left;    }