function f(tb) {

tb.style.backgroundColor= "#FFFF99";

}
function b(tb) {

tb.style.backgroundColor= "#FFFFFF";

}
function makeActionString()
				{
					var re10digit=/^\d{10}$/;
					    var re11digit=/^\d{11}$/;
					    var re6digit=/^\d{6}$/;
					    var emailFilter=/^.+@.+\..{2,6}$/;
					    var illegalChars= /[\(\)\<\>\,\;\:\\\/\"\[\]]/;
					    var passFilter = /^[a-zA-Z]\w{3,14}$/ ;


					var username=document.getElementById("userName").value;

					var emailId=document.getElementById("emailIdsign").value;
					var city=document.getElementById("city").value;
					var contactNo=document.getElementById("contactNo").value;
					var password=document.getElementById("passwordsign").value;
					var repassword=document.getElementById("repassword").value;
					var errorString="";



					if(username.length==0)
					{

						errorString=errorString+ "** UserName: Please enter a Username.**" ;
						errorString=errorString+'<br>'



					}


					if(emailId.length==0){
						errorString = errorString+'** Mail Id is a mandatory Field **';
						errorString=errorString+'<br>'
					    }
					    else if(!(emailFilter.test(emailId))||(emailId.match(illegalChars)))
					    {

					       errorString= '** <b>Invalid EMAIL address</b>:please enter a valid ID **';
					       errorString=errorString+'<br>'
					    }



										if(password.length==0)
					{
						errorString=errorString+ "** Password: Please enter a Password.**" ;
						errorString=errorString+'<br>'

					}
					if(repassword.length==0)
					{
						errorString=errorString+ "** Password: Re-enter  Password.**" ;
						errorString=errorString+'<br>'

					}
					else if(repassword!=password)
					{
						errorString=errorString+ "** password and retype password must be same.**" ;
						errorString=errorString+'<br>'
					}


					 if(contactNo.length==0)
					    		{
						errorString = errorString+'** Phone is a mandatory Field **';

						errorString=errorString+'<br>'
					    }
					    else if((contactNo.search(re10digit)==-1)&&(contactNo.search(re11digit)==-1))
					    {

						errorString  = '** Phone no should be 10 or 11 digit long if you are using landline please give the STD code. **';
						errorString=errorString+'<br>'
					    }


					if(city.length==0)
					{
						errorString=errorString+ "** Location: Please enter ur city. **";
						errorString=errorString+'<br>'
					}

					if(errorString.length>1)
					{
					  document.getElementById("error").innerHTML=errorString;
					  return false;
					}


				}