/*
 * TextLimit - jQuery plugin for counting and limiting characters for input and textarea fields
 * 
 * pass '-1' as speed if you don't want the char-deletion effect. (don't just put 0)
 * Example: jQuery("Textarea").textlimit('span.counter',256)
 *
 * $Version: 2009.07.25 +r2
 * Copyright (c) 2009 Yair Even-Or
 * vsync.design@gmail.com
*/
(function(jQuery) {
	jQuery.fn.phonelimit=function(counter_el, thelimit, speed) {
		var charDelSpeed = speed || 15;
		var toggleCharDel = speed != -1;
		var toggleTrim = true;
		var that = this[0];
		var isCtrl = false; 
		//updateCounter();
		
		function updateCounter(){
			if(typeof that == "object")
				jQuery(counter_el).text((that.value.length==0?0:Math.floor(that.value.length/12)+1)+"/"+thelimit/12+"条");
		};
		
		this.keydown (function(e){ 
			if(e.which == 17) isCtrl = true;
			var ctrl_a = (e.which == 65 && isCtrl == true) ? true : false; // detect and allow CTRL + A selects all.
			var ctrl_v = (e.which == 86 && isCtrl == true) ? true : false; // detect and allow CTRL + V paste.
			// 8 is 'backspace' and 46 is 'delete'
			if( this.value.length >= thelimit && e.which != '8' && e.which != '46' && ctrl_a == false && ctrl_v == false)
				e.preventDefault();
		})
		.keyup (function(e){			
			if(e.which == 17)
				isCtrl=false;
			if( this.value.length > thelimit) this.value = that.value.substr(0,thelimit);
			
			//updateCounter();
		});
		
	};
})(jQuery);