<!-- 
var pos = 0;      // initial top position
var stp = 10;     // step increment size
var spd = 150;    // speed of increment
var lwr = 0;      // lower limiter
var tim;          // timer variable
var offset = 350; // height of iframe
var divHeight = 0;

function scroll_up(){
	no_scroll();
	var upr = 0;
	if(divHeight > offset)
		upr = -(divHeight - offset); //upper limiter
	else
		upr = -(offset - divHeight); //upper limiter
	if(pos > upr)
		pos -= stp;
	do_scroll(pos);
	tim = setTimeout("scroll_up()",spd);
	if(pos > upr){
		hideUpDown('up');
	}else{
		hideUpDown('down');
		showUpDown('up');	
	}
	
}

function scroll_dn(){
	no_scroll();
	if(pos < lwr)
		pos += stp;
	do_scroll(pos);
	tim = setTimeout("scroll_dn()",spd);
	if(pos < lwr){
		hideUpDown('down');
	}else{
		hideUpDown('up');
		showUpDown('down');	
	}
	
}

function do_scroll(pos){
	if (navigator.appName.indexOf("Microsoft")!=-1) {
  		document.frames['contentTarget'].document.getElementById('divTxt').style.top = pos;
	}
	else {
		document.getElementById('contentTarget').contentDocument.getElementById('divTxt').style.top = pos;
	}
}

var firstTime = true;
function no_scroll(){
	if (navigator.appName.indexOf("Microsoft")!=-1) {
  		divHeight = document.frames['contentTarget'].document.getElementById('divTxt').offsetHeight;
	}
	else {
		divHeight = document.getElementById('contentTarget').contentDocument.getElementById('divTxt').offsetHeight;
	}
	var upr = 0;
	if(divHeight > offset){
		upr = -(divHeight - offset); //upper limiter
		
		clearTimeout(tim);
		if(firstTime == true){
			firstTime = false;
			document.getElementById('down').src = '/moheb/images/downFirst.gif';
		}else
			document.getElementById('down').src = '/moheb/images/down.gif';
		if(pos > upr)
			showUpDown('down');
		if(pos <= upr)
			hideUpDown('down');
		if(pos < lwr)
			showUpDown('up');
		if(pos >= lwr)
			hideUpDown('up');
	
	}else{
		upr = -(offset - divHeight); //upper limiter
		hideUpDown('up');
		hideUpDown('down');
	}
}		

function showUpDown(updown){
	if(updown == "up"){
		document.getElementById('up').style.visibility = 'visible'
	}else{
		document.getElementById('down').style.visibility = 'visible'
	}
}
function hideUpDown(updown){
	if(updown == "up"){
		document.getElementById('up').style.visibility = 'hidden'
	}else{
		document.getElementById('down').style.visibility = 'hidden'
	}
}
// -->