function myShow(id) {
   var el = document.getElementById( 'img_' + id );
   var div = document.getElementById( 'div_' + id);
   if(div.style.display == 'none') { 
       div.style.display = "block"; 
       el.src="/images/menuarrup.gif";
    } else { 
       div.style.display = "none"; 
       el.src="/images/menuarr.gif";
    }
}


        
    function myShow2() {var el = document.getElementById( "po" );
                      
	   if(el.style.display=="none")
	   {el.style.display = ""; 
	   prog.src="/images/menuarrup.gif";} 
	   else{el.style.display = "none"; 
	   prog.src="/images/menuarr.gif";}}
    function myShow3() {var el = document.getElementById( "internet" );
        if(el.style.display=="none")
		{el.style.display = "";
		inter.src="/images/menuarrup.gif";} 
		else{el.style.display = "none";
		inter.src="/images/menuarr.gif";}}
    function myShow4() {var el = document.getElementById( "macworld" );
       if(el.style.display=="none")
	   {el.style.display = "block";
	    mac.src="/images/menuarrup.gif";} 
		else{el.style.display = "none";
		mac.src="/images/menuarr.gif";}}
    function myShow5() {var el = document.getElementById( "home" );
       if(el.style.display=="none")
	   {el.style.display = "";
	    comp.src="/images/menuarrup.gif";} 
		else{el.style.display = "none";
		comp.src="/images/menuarr.gif";}}