// JavaScript Document
String.prototype.count=function(s1) { 
		return (this.length - this.replace(new RegExp(s1,"g"), '').length) / s1.length;
	}


	function updateleft(nb,src_id,target_id){
		var target = $(target_id);
		var src = $(src_id);
		//src.value = $F(src).slice(0,nb);
		var length = $F(src).length;
		target.update((nb-length)+" chars left");
	}
	
	function countword(mychar,src_id,target_id){
		var target = $(target_id);
		var src = $(src_id);
		var val = $F(src_id); 
		var nb = val.count(mychar);
		if(val.length>0)nb++;
		target.update(nb);
	}