function trim_all(strObjName){
   var strObj = strObjName;
   var strRet = "";
   for(i=0;i < strObj.length;i++){
	 if(strObj.charAt(i) != "" && strObj.charAt(i) != "")
	 strRet = strRet+strObj.charAt(i);
  }
	return strRet;
}


function loginchk(){
	//alert("a");
 var email = document.login.email;
 var reTESTfirstchar = /^[a-zA-Z]*$/;
 var reEMAIL = /^[0-9a-zA-Z_\.-]+\@[0-9a-zA-Z_\-]+\.[0-9a-zA-Z_\.-]*$/;
 if(trim_all(email.value) == ""){
	document.getElementById("emailalert1").style.display='block';
	email.focus();
	return false;
 }else if(!reTESTfirstchar.test(email.value.charAt(0))){
	document.getElementById("emailalert1").style.display='none';
	document.getElementById("emailalert2").style.display='block';
	email.focus();
	return false;
 }else if(!reEMAIL.test(email.value)){
	 document.getElementById("emailalert1").style.display='none';
	 document.getElementById("emailalert2").style.display='none';
	 document.getElementById("emailalert3").style.display='block';
     email.focus();
	 return false;
 }else{
	 document.getElementById("emailalert1").style.display='none';
	 document.getElementById("emailalert2").style.display='none';
	 document.getElementById("emailalert3").style.display='none';
 }
 
 var password = document.login.password;
 if(trim_all(password.value) == ""){
	 document.getElementById("passalert").style.display='block';
	 password.focus();
	 return false;
	}else{
		document.getElementById("passalert").style.display='none';
	}
 
 
 
 document.login.updte.value=1;
 return true;
 
}