@media handheld, only screen and (max-width:1024px){

.maincol { border: 0px solid #999999 ; width: 100% }
.rightcol { display: none }
.isevtool { margin: 0 auto ; width: 700px ; display: block ; border: 0px solid green }
.evt_img { display: none; }
.evt_select { max-width: 168px; }

}

@media handheld, only screen and (max-width:700px) {

.isevtool { display: none; }

}