function imageRoller(interval,repeat){
	if(isIE()){
		var centerHeight = getStyle('center','height');
		if(document.getElementById('nocal')){
			var calHeight = getStyle('nocal','height');
			var height1 = centerHeight;
			var height2 = calHeight;
			tokens1 = height1.split('px');
			var token1=tokens1[0];
			tokens2 = height2.split('px');
			var token2 = tokens2[0];
			var newHeight = Math.round(token1-token2)+'px';
		}else{
			var newHeight = centerHeight;
		}
		document.getElementById('rollerContainer').style.height=newHeight;
	}
 	var rollerContainer=document.getElementById('rollerContainer');
    var rollerContent=document.getElementById('rollerContent');
	if(repeat>1){
    	var roller1=document.getElementById('roller1');
    	var roller2=document.getElementById('roller2');
    	for(i=0;i<repeat;i++){
    		roller2.innerHTML+=roller1.innerHTML;
    	}
	}
    function rollIt(){
		if(repeat>1){
	        if(rollerContent.scrollTop>=roller2.offsetTop){
	            rollerContent.scrollTop-=roller1.offsetHeight;
	        }else{
	   	        rollerContent.scrollTop++;
	        }
		}
    }
	
	function getStyle(el,styleProp) {
    	el=document.getElementById(el);
    	var result;
    	if(el.currentStyle) {
    	    result = el.currentStyle[styleProp];
    	} else if (window.getComputedStyle) {
    	    result = document.defaultView.getComputedStyle(el,null)
    	                                .getPropertyValue(styleProp);
    	} else {
    	    result = 'unknown';
    	}
    	return result;
	}
    var rollerTimer=setInterval(rollIt,interval);
    rollerContent.onmouseover=function(){clearInterval(rollerTimer);}
    rollerContent.onmouseout=function(){rollerTimer=setInterval(rollIt,interval);}
}