.w{ width:100%; background:url(images/bg_bot.gif) repeat-x bottom }

.col1, .col2, .col3, .col4{ float:left}
/*======= width =======*/
.site_center{ margin:0 auto; text-align:left; width:766px; }

/*======= header =======*/
#header {height:150px;  background:url(images/bg_top.gif) no-repeat center top}

/*======= content =======*/
#content .col1{ width:311px; background:#ffffff no-repeat left top; }
#content .col2{ background-image: none; width:455px }

/*======= index.html =======*/
#page1 #content .col3{ width:184px; background:repeat-y right top}
#page1 #content .col4{ width:180px}

/*======= index-5.html =======*/
#page6 #content .col1{ width:780px; background:none}