function menu_over(){ 

    var tagimgs=document.getElementsByTagName('img');

    for (var xc=0;xc<tagimgs.length;xc++)

    {

    	if (tagimgs[xc].src.indexOf('_on')>0)

    	{

    		tagimgs[xc].onmouseover=function () {this.src=this.src.replace('_on','_off'); if (document.all) this.style.filter=this.style.filter.replace('_on','_off'); };

    		tagimgs[xc].onmouseout=function () {this.src=this.src.replace('_off','_on'); if (document.all) this.style.filter=this.style.filter.replace('_off','_on'); };

    	}

    

    	if (tagimgs[xc].src.indexOf('_off')>0)

    	{

    		tagimgs[xc].onmouseover=function () {this.src=this.src.replace('_off','_on'); if (document.all) this.style.filter=this.style.filter.replace('_off','_on'); };

    		tagimgs[xc].onmouseout=function () {this.src=this.src.replace('_on','_off'); if (document.all) this.style.filter=this.style.filter.replace('_on','_off'); };

    	}

    }

}

menu_over()