function validate_email(elementValue)
{
   var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
   return emailPattern.test(elementValue);
}

function onlyNumbers(e)		//INTEGER NUMBER
{
   var keynum;
   var keychar;
   var numcheck;
   
   if(e.which) 	// Netscape / Firefox / Opera
   {
      keynum = e.which;
   }
   else if(window.event) // IE
   {
      keynum = e.keyCode;
   }
   
   if(keynum==8 || keynum==9 || keynum==13 || keynum==46)
   	return keynum;
   keychar = String.fromCharCode(keynum); 
   numcheck = /\d/;
   return numcheck.test(keychar);
}

function onlyCurency(e)
{
   var keynum;
   var keychar;
   var numcheck;

   if(e.which) // Netscape / Firefox / Opera
   {
      keynum = e.which;
   }
   else if(window.event) // IE
   {
      keynum = e.keyCode;
   }
   
    if(keynum==8 || keynum==9 || keynum==13 || keynum==46)
	   	return keynum;
	
   keychar = String.fromCharCode(keynum);
   numcheck = /[\d\.]/;
   return numcheck.test(keychar);
}

function phoneNumbers(e)		//INTEGER NUMBER
{
   var keynum;
   var keychar;
   var numcheck;
   
   if(e.which) 	// Netscape / Firefox / Opera
   {
      keynum = e.which;
   }
   else if(window.event) // IE
   {
      keynum = e.keyCode;
   }
   
   if(keynum==8 || keynum==9 || keynum==13)
   	return keynum;
   keychar = String.fromCharCode(keynum); 
   numcheck = /[\d\+\-,]/;
   return numcheck.test(keychar);
}