function checkEmpty(form) { for( var i = 0; i < form.elements.length; i++) { var e = form.elements[i]; var ename = e.name; var question_number = ""; //check name has "ans" first if(ename.indexOf("ans") != -1) { //radio, checkbox if ( e.type == "radio" || e.type == "checkbox") { var did = false; for (var num = 0; num < form.elements[ename].length; num++) { if(form.elements[ename][num].checked == true) { did = true; } } if(did == false) { question_number = ""; var index = ename.indexOf("op_"); //for SA and MC type if(index == -1) question_number = ename.substring(4); else //for SR and GP type name is like rans_op_ question_number = ename.substring(5,index); var rName = "req" + question_number; var getReq = "form." + rName +".value"; if( eval(getReq) == 'y' ) { alert("Please provide an answer for question "+question_number+"." ); return false; } } } else if ( e.type == "select-one") { var evalue = e.options[e.selectedIndex].value; if ( (evalue == null) || (evalue=="") || isblank(evalue)) { // GP type var index = ename.indexOf("_s_op_"); if(index != -1) { question_number = ename.substring(4,index); var rName = "req" + question_number; var getReq = "form." + rName +".value"; if( eval(getReq) == 'y' ) { alert("Please provide an answer for question " + question_number + "." ); return false; } } //FR type else { var index = ename.indexOf("op_"); question_number = ename.substring(5,index); var rName = "req" + question_number; var getReq = "form." + rName +".value"; if( eval(getReq) == 'y' ) { alert("Please provide an answer for question " + question_number + "." ); return false; } } } } else if (e.type == "textarea"||e.type=="text"){ var evalue = e.value; if ( (evalue == null) || (evalue=="") || isblank(evalue)) { question_number = ename.substring(4); var rName = "req" + question_number; var getReq = "form." + rName +".value"; if( eval(getReq) == 'y' ) { alert("Please provide an answer for question " + question_number + "." ); return false; } } }//end of textarea or text field }//end of "ans" found in name }//end of loop of elements } function isblank(s) { for(var i=0; i