function checkfield(data)
{
if (rmspaces(data) == "") return false
else return true;
};

function checkfieldn(data,len)
{
if ( (rmspaces(data)).length < len) return false
else return true;
};

function noblank()
{
if (event.keyCode==32)
	return false;
if(event.keyCode>57 ||(event.keyCode<48 && event.keyCode!=46))
	return false;
}

function rmspaces(x) {
var leftx = 0;
var rightx = x.length -1;
while ( x.charAt(leftx) == ' ') leftx++;
while ( x.charAt(rightx) == ' ') --rightx;
var q = x.substr(leftx,rightx-leftx + 1); 
if ( (leftx == x.length) && (rightx == -1) ) q ='';
return(q)
};

function y2k(number) { return (number < 1000) ? number + 1900 : number; }

function isdate (day,month,year)
{
// checks if date passed is valid
// will accept dates in following format:
// isDate(dd,mm,ccyy), or
// isDate(dd,mm) - which defaults to the current year, or
// isDate(dd) - which defaults to the current month and year.
// Note, if passed the month must be between 1 and 12, and the
// year in ccyy format.

    var today = new Date();
    year = ((!year) ? y2k(today.getYear()):year);
    month = ((!month) ? today.getMonth():month-1);
    if (!day) return false
    var test = new Date(year,month,day);
    if ((y2k(test.getYear()) == year)&&(month == test.getMonth())&&(day == test.getDate()))
        return true;
    else
        return false
}


function todate(fday,fmon,fyear , tday,tmon,tyear)
{
var fromdt;
var todt;

   fm = parseFloat(fmon) - 1;
   tm = parseFloat(tmon) - 1;
   var fromdt = new Date(fyear,fm,fday);   
   var todt = new Date(tyear,tm,tday);

      if (todt < fromdt)
          return false;
       else
          return true;
}

function dateequal(fday,fmon,fyear , tday,tmon,tyear)
{
  if (  (parseFloat(fday) == parseFloat(tday)) && (parseFloat(fmon) == parseFloat(tmon)) && (parseFloat(fyear) == parseFloat(tyear)) )
     {
       return true;
     }
  else
     {
       return false;
     };
}



function isnumeric(data)
 {
 var flag = ( (rmspaces(data)).length > 0);
 var isdot = 0;
	  if (flag)
	  {
		for (i=0;i<data.length && flag;i++)
			    if ( data.charAt(i) > '9' || data.charAt(i) < '0')
			       {
				 if (data.charAt(i) != '.' || isdot > 0)
				    {
					 flag = false;
				    }
				    else
				    {
					 isdot = 1;
				    }
			       };
	  };
	  
     return flag
  }
  
  
  
  function isinteger(data)
   {
   var flag = ( (rmspaces(data)).length > 0);
   
     if (flag)
     {
          for (i=0;i<data.length && flag;i++)
                if ( data.charAt(i) > '9' || data.charAt(i) < '0')   
                                                            flag = false; 
      };
    
   return flag
  }

function isemail(data){
var flag = false;
if (  (data.indexOf('@',0)  == -1) || (data.indexOf('\\',0)  != -1) || (data.indexOf('/',0)  != -1) ||!checkfield(data) || ( data.indexOf('.',0)  == -1 ) || ( data.indexOf('@')  == 0 ) || ( data.lastIndexOf('.') < data.lastIndexOf('@')  ) || ( data.lastIndexOf('.') == (data.length - 1)  ) ||        ( data.lastIndexOf('@')   !=   data.indexOf('@') ) || (data.indexOf(',',0)  != -1) ||  (data.indexOf(':',0)  != -1) || (data.indexOf(';',0)  != -1)  )return flag
else        
{
     var temp = rmspaces(data);
     if (temp.indexOf(' ',0) != -1) flag = true;
     var d3 = temp.lastIndexOf('.') + 4;
     var d4 = temp.substring(0,d3);
     var e2 = temp.length  -  temp.lastIndexOf('.')  - 1 ;
     var i1 = temp.indexOf('@') ;
    if (  (temp.charAt(i1+1) == '.') || ( e2 > 3 )  ||  ( e2 < 2 )    ) flag = true;
          return !flag;
 };
   };// End Of Function