<!--

/**************************************************************************
 * Limits the Chars of Textarea Elements or Input Elements
 *
 * @Author: Michael Schwarz (M.Schwarz@php-vision.de)
 * @Date: 14/04/2006											
 * @param: Obj     Das zu überwachende Element
 * @param: maxChr  Maximale Zeichen Anzahl
 * @param: counter ID eines HTML Obj. für Aktuellen Counterstand 
 * @Version: 0.5 ( available on www.php-vision.de ) 
 * -----------------------------------------------------------------------
 * Usage :
 *  <script type="text/javascript" src="textarea-char-limit.js"> </script>  
 *  Currently <span id="counter_field">0</span> Chars of 250 entered<br />
 *  <textarea onfocus="textlimit(this,250,'counter_field');">  </textarea>
 * -----------------------------------------------------------------------
 * Donate to Paypal Account M.Schwarz@php-vision.de
/*************************************************************************/ 

function textlimit(Obj,maxcount,counter)
{
	function c_len(){	
		if(this.value.length > this.maxcount && this.maxcount != 0) 
			return false;
		update_count(this);	
	}
	
	function upd_count(){	update_count(this);}
	
	function update_count(elem){
		if(elem.counter != null){
			cnt = getObj(elem.counter);
			cnt.innerHTML = elem.value.length
	}}
	
	function check(){
		if (this.value.length  > this.maxcount && this.maxcount != 0) 
			this.value = this.value.substr(0,this.maxcount);
	    update_count(this); 
	}
	
	Obj.counter   = counter;      Obj.maxcount  = maxcount;
	Obj.onkeypress= c_len;        Obj.onkeydown = upd_count;	
	Obj.onkeyup   = check;        Obj.onfocus   = check;
	Obj.onblur    = check;		
	Obj.onmouseup = check;

	update_count(Obj);
	
/*************** OTHER USED / NEEDED FUNCTIONS ***************************/
function getObj( ref ) { if( document.getElementById( ref ) != null )//W3C/
return document.getElementById(ref); else if(document.all[ref]!=null)//IE5/
return document.all[ ref ]; else if( document.layers[ ref ] != null )//NN4/
return document.layers[ref]; else alert('Object "'+ref+'" not Found')//ERR/
}/************************************************************************/
}

// -->


