/********************************* 

Created by : Pradeep Rajoriya 
Creatad date : 23 july 2009 
Purpose : validation function 

***********************************/ 

function chech_black(field,msg)
{
with (field)
{
if (value==null||value=="")
  {alert(msg);return false;}
else {return true}
}
}


function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}

// To check for valid numeric strings	  
function IsNumeric(strString)
   
   {
   var strValidChars = "0123456789.-";
   var strChar;
   var blnResult = true;

   if (strString.length == 0) return false;

   //  test strString consists of valid characters listed above
   for (i = 0; i < strString.length && blnResult == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
         blnResult = false;
         }
      }
   return blnResult;
   }
   
   

function confirmPassword(ctl1,ctl2)
{
	if(ctl1.value != ctl2.value)
	{
   		alert("Password and confirm password must be same");
   		ctl1.focus();
   		return(false);
   }
}//End of Function

function isAlphabet(elem, helperMsg)
{
	var alphaExp = /^[a-zA-Z]+$/;
	if(!elem.value.match(alphaExp)){
		//return true;
	//}else{
		alert(helperMsg);
		//elem.focus();
		return false;
	}
}