function resizeImage(target, size){
	var imgDiv = document.getElementById(target);
	var imgTags = imgDiv.getElementsByTagName('img');
	for( var i = 0 ; i < imgTags.length ; i++ ){
		if( imgTags[i].width > imgTags[i].height ){
			imgTags[i].style.width = size + 'px';
		}else{
			imgTags[i].style.height = size + 'px';
		}
	}
}

function addWindowOnload(func){  
    try{  
       window.addEventListener("load",func,false);  
    }catch(e){  
       window.attachEvent("onload",func);  
    }  
}
	
function displayImage(divId, divClass, itemNum){
	var tmpDiv = document.getElementById(divId);
	var divList = tmpDiv.getElementsByTagName('div');
	var imgList = new Array();
	
	for( var i = 0 ; i < divList.length ; i++ ){
		if( divList[i].className == divClass ){
			imgList.push(divList[i]);
		}
	}
	
	var tmpList = new Array(imgList.length);
	
	for( var i = 0 ; i < tmpList.length ; i++ ){
		tmpList[i] = i;
	}

	for( var i = 0 ; i < tmpList.length ; i++ ){
		var tmpIndex = Math.floor( Math.random() * tmpList.length );
		var tmp = tmpList[tmpIndex];
		tmpList[tmpIndex] = tmpList[i];
		tmpList[i] = tmp;
	}
	
	for( var i = 0 ; i < imgList.length && i < itemNum ; i++ ){
		var tmpImgIndex = tmpList[i];
		imgList[tmpImgIndex].style.display="";
	}
	
	for( var i = 0 ; i < imgList.length ; i++ ){
		if( imgList[i].style.display == "none" ){
			tmpDiv.removeChild(imgList[i]);
		}
		;
	}
	
}