var listtot=10;
var holder=1;                        


function showlisting(num){ 
                if (num=="1")  {    document.galleryphoto.src="images/photo1.jpg";}
                if (num=="2")  {    document.galleryphoto.src="images/photo2.jpg";}					 
                if (num=="3")  {    document.galleryphoto.src="images/photo3.jpg";}					 
                if (num=="4")  {    document.galleryphoto.src="images/photo4.jpg";}					 
                if (num=="5")  {    document.galleryphoto.src="images/photo5.jpg";}					 
                if (num=="6")  {    document.galleryphoto.src="images/photo6.jpg";}					 
                if (num=="7")  {    document.galleryphoto.src="images/photo7.jpg";}					 
                if (num=="8")  {    document.galleryphoto.src="images/photo8.jpg";}					 
                if (num=="9")  {    document.galleryphoto.src="images/photo9.jpg";}					 
                if (num=="10") {   document.galleryphoto.src="images/photo10.jpg";}
}


function nextlisting () {
        holder += 1;   
      	if (holder>listtot){holder=1;}
        showlisting(holder);
       
}

function lastlisting () {    
       	holder -= 1;
       	if (holder==0){holder=listtot}
       	showlisting(holder);
}