function changeImgWidth(object,maxWidth){
	var img = object.getElementsByTagName('img');
	
	if (img.length < 1) return false;

	for (var i=0; i<img.length; i++) {
		
		//过快LOAD出了的
		if (img[i].width > maxWidth) {
			
			img[i].width = maxWidth;
			
			img[i].alt = '点击打开原始尺寸图';
			
			var pNode = img[i].parentNode;
			
			var a = document.createElement("a");
			var image = img[i].cloneNode(true);
			a.href = image.src;
			a.target="_blank"
			a.appendChild(image);
			try{
				pNode.replaceChild(a,img[i]);
			}catch(e){
				//alert(e.message);
			}
		}

		//未LOAD出的
		img[i].onload = function() {
			if (this.width > maxWidth) {
				
				this.width = maxWidth;
				
				this.alt = '点击打开原始尺寸图';
				
				var pNode = this.parentNode;
				
				var a = document.createElement("a");
				var image = this.cloneNode(true);
				a.href = image.src;
				a.target="_blank"
				a.appendChild(image);
				try{
					pNode.replaceChild(a,this);
				}catch(e){
					//alert(e.message);
				}
			}
		}
	}
}