function VerifyEmail(obj)
{
sir=obj.value;
if ((sir.indexOf('@')<1) || (sir.length < 5 ) || (sir.indexOf('.')<3) || (sir.indexOf('.') >= sir.length-1) || (sir.indexOf('@') >= sir.indexOf('.')-1))
        {
        alert("Invalid Email!");
        obj.focus();
        return false;
        }
else
        return true;
}

function VerifyBlank(obj,ErrText){
 if (obj.value=="") {
   obj.focus();
   alert(ErrText)
   return 0;
 } 
 return 1;
}


function VerifyNumber(obj,len,field){

sir=obj.value
if (len!=-1)
  if (sir.length<len) {
    alert(field+" field must have "+len+" digits!")
    obj.focus();
    return 0;
  }
  
for(i=0;i < sir.length;i++)	{
	ch=sir.substring(i,i+1);
	if(ch<"0" || ch>"9") {
		alert("Only numbers please!");
		obj.focus();
		return 0;
	}
}
return 1;
}