[              function Cbofunction(ddl)
		{ 		
		var caseSensitive=false;
		var undefined;
		    if(ddl.keypressBuffer==undefined)
		     {
		      ddl.keypressBuffer="";		
		     }
		var key = String.fromCharCode(window.event.keyCode); 
		ddl.keypressBuffer += key;
		     if(!caseSensitive)
		     {
		      ddl.keypressBuffer = ddl.keypressBuffer.toLowerCase()
		     }
		 var optionsLength =ddl.options.length;
		 for(var n=0;n		   {
		 
		     var optionText = ddl.options[n].text;
		     
		     if (!caseSensitive)
		     {
		       optionText = optionText.toLowerCase();
		     }
		     //alert(ddl.keypressBuffer);
		     if (optionText.indexOf(ddl.keypressBuffer,0) == 0) 
		     {
		     
		     ddl.selectedIndex = n;
		        return false;
		     }
		   }
			ddl.keypressBuffer = key;
			return true;
		}