function checkrequired(which) {
var pass=true;
var pass2=true;
var pass3=true;
var pass4=true;
if (document.images) {
for (i=0;i<which.length;i++) {
var tempobj=which.elements[i];
if (tempobj.name.substring(0,8)=="required") {
if (((tempobj.type=="text"||tempobj.type=="textarea")&&
tempobj.value=='')||(tempobj.type.toString().charAt(0)=="s"&&
tempobj.selectedIndex==0)) {
pass=false;
break;
         }
      }
if ((tempobj.name=="requiredtelepon" || tempobj.name=="p_telepon" || tempobj.name=="p_fax" || tempobj.name=="p_nomor_outlet" ) && isNaN(tempobj.value)==true) {
pass3=false;
break;
}	  

if(tempobj.name=="p_dd" || tempobj.name=="p_mm" || tempobj.name=="p_yyyy"){
  if((which.elements[6].value != 0 && which.elements[7].value == 0 && which.elements[8].value == 0) || (which.elements[6].value != 0 && which.elements[7].value != 0 && which.elements[8].value == 0) || (which.elements[6].value == 0 && which.elements[7].value == 0 && which.elements[8].value != 0) || (which.elements[6].value == 0 && which.elements[7].value != 0 && which.elements[8].value != 0) || (which.elements[6].value != 0 && which.elements[7].value == 0 && which.elements[8].value != 0)){
    pass4=false;
    break;
  }
}			if (tempobj.name.substring(0,9)=="requirede") {
			
			if (((tempobj.type=="text"||tempobj.type=="textarea")&&
			tempobj.value==''||tempobj.value.indexOf('@',0)==-1||tempobj.value.indexOf('.') == -1)||(tempobj.type.toString().charAt(0)=="s"&&
			tempobj.selectedIndex==0)) {
			pass2=false;
			break;
			}

	}
   }
}
if (!pass) {
shortFieldName=tempobj.name.substring(8,30).toUpperCase();
alert("Kolom "+shortFieldName+" harus diisi.");
tempobj.focus();
return false;
}
else if(!pass2) {
shortFieldName=tempobj.name.substring(8,30).toUpperCase();
alert("Format email tidak benar .");
tempobj.focus();
return false;
}
else if(!pass3) {
if(tempobj.name == "requiredtelepon"){
   shortFieldName=tempobj.name.substring(8,30).toUpperCase();
}
else{ 
   shortFieldName=tempobj.name.substring(2,30).toUpperCase();
}
alert("Kolom "+shortFieldName+" harus diisi dengan Angka.");
tempobj.focus();
return false;
}
else if(!pass4) {
    alert("Format tanggal lahir tidak benar .");
return false;
}
else
 return true;
}