function checkPassword(pwd){ 
var objLow=document.getElementById("pwdLow"); 
var objMed=document.getElementById("pwdMed"); 
var objHi=document.getElementById("pwdHi"); 
objLow.className="pwd-strength-box"; 
objMed.className="pwd-strength-box"; 
objHi.className="pwd-strength-box"; 
if(pwd.length<6){ 
objLow.className="pwd-strength-box-low"; 
}else{ 
var p1= (pwd.search(/[a-zA-Z]/)!=-1) ? 1 : 0; 
var p2= (pwd.search(/[0-9]/)!=-1) ? 1 : 0; 
var p3= (pwd.search(/[^A-Za-z0-9_]/)!=-1) ? 1 : 0; 
var pa=p1+p2+p3; 
if(pa==1){ 
objLow.className="pwd-strength-box-low"; 
}else if(pa==2){ 
objMed.className="pwd-strength-box-med"; 
}else if(pa==3){ 
objHi.className="pwd-strength-box-hi"; 
} 
} 
}