var a=0;
var sml1="icon/";
var med1="show/";
var lrg1="";
var p=1;
var id=0;

function flip(cur) {


    if (document.images) {

//next page
	if (cur == 1) 
		id = id + 1;

//prev page
	if (cur == -1)
		id = id - 1;


// actual image id

	if (id>=amt)
		id = amt-1;
	if (id<0)
		id = 0;

        document.images['image1'].src = med1 + img[id].name;
        document.images['image1'].width = img[id].wd1;
        document.images['image1'].height = img[id].ht1;

    } //end if
}