How to auto select center picture in a slide images?

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Hello.
I have slide-show images used Jquery and jcarousellite.
You can see it in here
I want to its auto select center picture( has difference background) in slide. Now, when I click on right arrow, it can work correct 5 times, on 6-7 times, it work incorrect. And more, when click on left arrow, only 2 times work correct.
This is my code
The firt, in IMG tab – It have to ID property. After that, SPAN have to ID property.

XML

<DIV class="photo">
   <IMG id="2" src="./Hexbal_files/1262155399heelgarde.png" 
    width="160" height="220" class="imgSlide" alt="Heelgarde"> 
 </DIV>

In script code, I have to get ID of IMG tab (in example is 2) then using javascript to set class name for SPAN tag

HTML

<SCRIPT language="javascript" type="text/javascript">
 	
   $(".displayThumb").jCarouselLite({
	   btnNext: ".arowleft",
	   btnPrev: ".arowright",
	   visible:5,	   
	   beforeStart: function(a) {
	   var s = a[1].innerHTML;	//get center picture
	 
	   if(isLeft)
	  	 s=a[3].innerHTML;	
	   var i=s.lastIndexOf("id=");	//find id of img tag
	   if(i<0) return;
	   s = s.slice(i+3,i+7);
	   var array=s.split(" ",2) ; 		
	   s=array[0];
	   s=s.replace( /"/g, '' );//replace quote
	    	   
	   document.getElementById('pro' + s).className='test_hover';//set new class name for span tag
	  
	   
   }
   
   });
   
  
 </SCRIPT>

I don’t understand why that. Please help me. It’s very important in my project.

Thank so much.
PS : Sorry my English.
My nick Y.H :trinhhoaithanh1905
Email:hoaithanhtrinh@gmail.com

Posted 4-Feb-10 18:58pm

thepbac

Updated 5-Feb-10 11:24am

Chris Maunder772.8K

v4

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2 solutions

Solution 1

I have an answer for this question. Thank :laugh:

Posted 7-Feb-10 20:25pm

thepbac

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thepbac · Accepted Answer · 2010-02-26T21:24:00

Just changed to code bellow:

XML

<script language="javascript" type="text/javascript">
 $(".displayThumb").jCarouselLite({
         btnNext: ".arowleft",
         btnPrev: ".arowright",
         visible: 5,
         beforeStart: function(a) {
                        a.find('span').removeClass('test_hover');
                        },
                        afterEnd: function(a) {
                        $(a[2]).find('span').toggleClass('test_hover');
                        }

     });
</script>