/*
 * TextLimit - jQuery plugin for counting and limiting characters for input and textarea fields
 * 
 * pass '-1' as speed if you don't want slow char deletion effect. (don't just put 0)
 * Example: jQuery("Textarea").textlimit('span.counter',256)
 *
 * $Version: 2007.10.24 +r1
 * Copyright (c) 2007 Yair Even-Or
 * vsync.design@gmail.com
 
	<script>
	  jQuery("textarea").textlimit('span.counter',20);
	</script>
	<form>
	  <span class="counter"></span>
	  <textarea cols="40" rows="10"></textarea>
	</form>

 */
jQuery.fn.textlimit=function(counter_el, thelimit, speed) {
	var charDelSpeed = speed || 15;
	var toggleCharDel = speed != -1;
	var toggleTrim = true;
	
	var that = this[0];
	updateCounter();
	
	function updateCounter(){
		jQuery(counter_el).text(thelimit - that.value.length);
	};
	
	this.keypress (function(e){ if( this.value.length >= thelimit && e.charCode != '0' ) e.preventDefault() })
	.keyup (function(e){
		updateCounter();
		if( this.value.length >= thelimit && toggleTrim ){
			if(toggleCharDel){
				// first, trim the text a bit so the char trimming won't take forever
				that.value = that.value.substr(0,thelimit+100);
				var init = setInterval
					( 
						function(){ 
							if( that.value.length <= thelimit){ init = clearInterval(init); updateCounter() }
							else{ that.value = that.value.substring(0,that.value.length-1); jQuery(counter_el).text('trimming...  '+(thelimit - that.value.length)); };
						} ,charDelSpeed 
					);
			}
			else this.value = that.value.substr(0,thelimit);
		}
	});
	
};