function showsurvey(){

    var rand_no = Math.floor( 10 * Math.random()) +1;
    
    if (document.cookie.length>0) {
        c_start=document.cookie.indexOf("CAWebSurveyorSurvey=");
        if (c_start==-1){ // not cookie found
            if (rand_no == 10) {   
                window.open( "http://www.casurveys.com/wsb.dll/248/CAsitesurvey.htm", "" ,"status = 1, height = 750, width = 860, resizable = 0, scrollbars=1" );
                var date = new Date();
		        date.setTime(date.getTime()+(365*24*60*60*1000));
		        var expires = "; expires="+date.toGMTString();
                document.cookie ="CAWebSurveyorSurvey=1; expires=" + expires + "; path=/;domain=ca.com";
            }
        }
    }
 }