function showcir(p){
//alert("plus "+p);
//alert("number of "+cclength);

srcobj = document.getElementById("ccframe").src;

 var srcarray = srcobj.split("/");
 srclength = srcarray.length;
 srclength = srclength - 1; 
 srcobj = srcarray [ srclength ];

htmn = parseInt(srcobj);
//alert("current page "+htmn);
htmn = htmn + p;
//alert("possible next page "+htmn);


if ((htmn <= cclength) && (htmn > 1)) {
    htmn = htmn + ".htm";
//alert("<=cc and htm>first "+htmn);
    document.getElementById("ccframe").src = "cc/" + htmn;
    pg = document.getElementById("ccframe").src;
//    alert("new page "+pg);
 }
else {
    htmn = "1.htm";
//    alert("htmn "+htmn);
    document.getElementById("ccframe").src = "cc/" + htmn;
 }

}