var left = -875;   // left limit
var right = 0;   // right limit
var jump = 875;   // left limit
function jump_left() {
	//right = document.getElementById("offers_scrollable").offsetWidth - document.getElementById("offers_scroll_box").offsetWidth;  
	posn=parseInt(document.getElementById("offers_scrollable").style.marginLeft);
	//alert("jump_left: "+document.getElementById("offers_scrollable").offsetWidth+" "+posn);

	if(posn+jump<=0){
		document.getElementById("offers_scrollable").style.marginLeft = posn+jump;
	}
}

function jump_right() {
	right = document.getElementById("offers_scrollable").offsetWidth;
	posn=parseInt(document.getElementById("offers_scrollable").style.marginLeft);
	//alert("jump_right: "+document.getElementById("offers_scrollable").offsetWidth+" "+right+" "+posn);
	if(posn-jump-10>=-right){
		document.getElementById("offers_scrollable").style.marginLeft = posn-jump;
	}

}

function jump_to_active(nr){
	//alert(parseInt(nr*175/875));
	posn=parseInt(document.getElementById("offers_scrollable").style.marginLeft);
	document.getElementById("offers_scrollable").style.marginLeft = -jump*parseInt((nr-1)*175/875);
}