function userNameOnChange() { 
var userName = document.getElementById("bl_username").value;

httpObject1 = getHTTPObject();
if (httpObject1 != null) {
httpObject1.open("GET", "validateUserName.php?userName="+document.getElementById('bl_username').value, true);
httpObject1.send(null);
httpObject1.onreadystatechange = function (){
if(httpObject1.readyState == 4){
if(document.getElementById('bl_username').value!=""){
var var1=trim(httpObject1.responseText);
document.getElementById('errorText').innerHTML = var1;
}}}
}
}
function userEmailOnChange() { 
var userEmail = document.getElementById("bl_emailid").value;
httpObject2 = getHTTPObject();
if (httpObject2 != null) {
httpObject2.open("GET", "validateUserName.php?userEmail="+document.getElementById('bl_emailid').value, true);
httpObject2.send(null);
httpObject2.onreadystatechange =function (){
if(httpObject2.readyState == 4){
if(document.getElementById('bl_emailid').value!=""){
var var2=trim(httpObject2.responseText);
document.getElementById('emailText').innerHTML = var2;
}}}
}
}


				function check_form_validation() {
					   if((document.getElementById('bl_username').value).length<5)
					   {
						   alert("Please choose username with minimum 5 characters!");
                             return false;  
					   }
						 if((document.getElementById('bl_password').value).length<5)
					   {
						   alert("Please choose password with minimum 5 characters!");
                             return false;  
					   }
					   var email=document.getElementById('bl_emailid').value;					   
						var e=email.search(/\./);
						var et=e+1;					
						var tr=email.charAt(et);					
						if(tr=='.'){alert("Two consecutive dots not allowed in emailid!");						
												return false;
						}
									   
						var e1=email.search(/_/);
						var et1=e1+1;					
						var tr1=email.charAt(et1);					
						if(tr1=='.'){alert("Please enter a valid Emailid!");						
												return false;
						}
						var e2=email.search(/_/);
						var et2=e2+1;					
						var tr2=email.charAt(et2);					
						if(tr2=='_'){alert("Please enter a valid Emailid!");						
												return false;
						}
						var e3=email.search(/\./);
						var et3=e3+1;					
						var tr3=email.charAt(et3);					
						if(tr3=='_'){alert("Please enter a valid Emailid!");						
												return false;
						}
					
						var e4=email.search(/\./);
						var et4=e4+1;					
						var tr4=email.charAt(et4);					
						if(tr4=='-'){alert("Please enter a valid Emailid!");						
												return false;
						}
						var e5=email.search(/-/);
						var et5=e5+1;					
						var tr5=email.charAt(et5);					
						if(tr5=='-'){alert("Please enter a valid Emailid!");						
												return false;
						}
						var e6=email.search(/-/);
						var et6=e6+1;					
						var tr6=email.charAt(et6);					
						if(tr6=='.'){alert("Please enter a valid Emailid!");						
												return false;
						}
                        if (! dijit.byId('regfrm').validate()) {
                                alert("Please complete the registration!");
                             return false;
                        }  if(document.getElementById('errorText').innerHTML!=""){
						return false;
						}   if(document.getElementById('emailText').innerHTML!=""){
						return false;
						}                    
						  if(document.getElementById('outputText').innerHTML!=""){
						return false;
						}                    
                      return true;    
             	   }