function switchpic(u)
{ 
	currentthumb=u;
	document.getElementById('imageitempic').innerHTML = 	"<img class='itemimage' src='"+thumbimg[u]+"' alt='' >\n";
	updatebut(); 
	
  //document.location="#imageitempic";
  
} 					

function pre()
{
     imageObj = new Array();
     for(i=0; i<totalthumbs; i++) 
     {
     			imageObj[i] = new Image();
          imageObj[i].src=thumbimg[i];
     }
}

function updatebut()
{
	ni=currentthumb+1;
	if (ni < (totalthumbs))
	{
		document.getElementById('nextimg').innerHTML = '<a href=\"javascript:switchpic('+ni+');\"><img id=\"next\" border=\"0\" src=\"/images/trans.gif\" width=\"32\" height=\"32\"><\/a>';
	} 
	else 
	{
		document.getElementById('nextimg').innerHTML = '';
	} 

	ni=currentthumb-1;
	if (ni >= 0)
	{
		document.getElementById('previmg').innerHTML = '<a href=\"javascript:switchpic('+ni+');\"><img id=\"prev\" border=\"0\" src=\"/images/trans.gif\" width=\"32\" height=\"32\"><\/a>';
	} else {
	document.getElementById('previmg').innerHTML = '';
	}
}