function next()
{	
   	document.form.posrec.value=eval(document.form.posrec.value+"+"+document.form.maxnavigasi.value);
   	if (eval(document.form.posrec.value)>=eval(document.form.max.value))
	   {		
		alert("Sudah Di Halaman Terakhir");
		document.form.posrec.value=eval(document.form.posrec.value+"-"+document.form.maxnavigasi.value);
	   }
	else
	   { 
	   document.form.submit();
	    }
	
}
function prev()
{

	document.form.posrec.value=eval(document.form.posrec.value+"-"+document.form.maxnavigasi.value);
	if (eval(document.form.posrec.value)<0)
	   {		
		alert("Sudah Di Halaman Awal");
		document.form.posrec.value=eval(document.form.posrec.value+"+"+document.form.maxnavigasi.value);
	   }
	else
	   { 
	   document.form.submit();
      }

}

function first()
{

	if (eval(document.form.posrec.value)<=0)
		{ alert("Sudah Di Halaman Awal")}
	else
		{
		document.form.posrec.value=0
	   document.form.submit();
 
		}
}
function last()
{
	
	document.form.posrec.value=eval(document.form.posrec.value+"+"+document.form.maxnavigasi.value);
	if (eval(document.form.posrec.value)>=eval(document.form.max.value))
	   {
		alert("Sudah Di Halaman Terakhir");
		document.form.posrec.value=document.form.posrec.value+"-"+document.form.maxnavigasi.value
		}
	else
	   {
		no="0";
		maxx=eval(document.form.maxpage.value);
		for (ii=1;ii<=maxx;ii+=1)
		  {
		  no=eval(no+"+"+document.form.maxnavigasi.value);
		  }
		
		document.form.posrec.value=no;
		document.form.submit();
		}
	
}