function selectRange()
{
	if(document.rangesearch.range.value == "")
	{
		alert("Please select a Range");
	document.rangesearch.range.focus();
		return false;
	}
	return true;
}

function quantity(strString)   {
   var strValidChars = "0123456789";
   var strChar;
   var blnResult = true;
   if (strString.length == 0) {
	   alert("Please Enter the Quantity");
	   return false;
   }
    for (i = 0; i < strString.length && blnResult == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
		  alert("Please Enter the Numeric Integers for Quantity");
		  blnResult = false;
         }
      }
   return blnResult;
   }
   function isEmail( string ) 
	{
			if(string.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
					return true;
			else
					return false;
	}

function log_chk()
{
if(document.left_login.user_name.value=="")
{
alert("Please Enter Email ID");
document.left_login.user_name.focus();
return false;
}
if(!isEmail(document.left_login.user_name.value))
{
		alert("Please enter valid Email ID ");
		document.left_login.user_name.focus();
		return false;
}
if(document.left_login.user_pass.value=="")
{
alert("Please Enter Password");
document.left_login.user_pass.focus();
return false;
}
return true;
}

function join_chk(){
if(document.join.email_join.value=="")
{
alert("Please Enter Email ID");
document.join.email_join.focus();
return false;
}
if(!isEmail(document.join.email_join.value))
{
		alert("Please enter valid Email ID ");
		document.join.email_join.focus();
		return false;
}

}