function __doPostBack(eventTarget, eventArgument) {

var triptype;

var origin=document.forms["Form1"].elements["ctlAvailCriteria_cboOrigin"].value;

var dest=document.forms["Form1"].elements["ctlAvailCriteria_cboDest"].value;

var depday=document.forms["Form1"].elements["ctlAvailCriteria_cboDepDay"].value;

var depmonFull=document.forms["Form1"].elements["ctlAvailCriteria_cboDepMon"].value;

var flyDate=depmonFull.split("/");

var depmon=flyDate[0];

var depyear=flyDate[1];

var retday=document.forms["Form1"].elements["ctlAvailCriteria_cboRetDay"].value;

var retmonAll=document.forms["Form1"].elements["ctlAvailCriteria_cboRetMon"].value;

var retDate= retmonAll.split("/");

var retmon=retDate[0];

var retyear=retDate[1];

}