function rev()
{
var a;
URL=window.location.href;
var xstart = URL.lastIndexOf("/") + 1
	var xend = URL.length
	var hereName = URL.substring(xstart,xend)
	var herePath = URL.substring(0,xstart)
	var fileNameLength = hereName.length
	var temp= hereName.substring(fileNameLength-7,fileNameLength-4)

// this condition work upto file name not morethan xxxx999.htm
	if(temp<=10)
	 var Zero="00"
	else
	{
	 var Zero="0"
	 }
	var rtemp=	hereName.substring(0,fileNameLength-7)+Zero+(temp-1)+".htm"
window.location.href=rtemp;
}

function far()
{
URL=window.location.href;
var xstart = URL.lastIndexOf("/") + 1
	var xend = URL.length
	var hereName = URL.substring(xstart,xend)
	var herePath = URL.substring(0,xstart)
	var fileNameLength = hereName.length
	var temp= hereName.substring(fileNameLength-7,fileNameLength-4)

	if(temp<9)
	 var Zero="00"
	else
	{
	 var Zero="0"
	}
if (temp.substring(0,1)=='0')
 if(temp.substring(1,3)=='0')
    var final=eval(temp.substring(2,3))+1
    else
    var final=eval(temp.substring(1,3))+1
	var ftemp=	hereName.substring(0,fileNameLength-7)+Zero+final+".htm"
window.location.href=ftemp;
}