var sObj,sCols;
var sWidth,sStep=0,sPos=0,slideW;
function initSlider() {
	sObj=document.getElementById('sliderContent');
	sWidth=-110;

	mSl=document.getElementById('arrowUp');
	mSl.onmousedown=function() { sStep=10; runSlider(); }
	mSl.onmouseup=function() { sStep=0; }

	mSr=document.getElementById('arrowDown');
	mSr.onmousedown=function() { sStep=-10; runSlider(); }
	mSr.onmouseup=function() { sStep=0; }
}
function runSlider() {
	if(sStep!=0) {
		sPos+=sStep;
		if(sPos>0) sPos=0;
		if(sPos<-110) sPos=-110;
		sObj.style.marginTop=sPos+'px';
		setTimeout(runSlider,30);
	}
}

window.onload = function() { initSlider(); };