// JavaScript Document

var objNode = function(o){return document.getElementById(o);}



String.prototype.Trim = function(){ return this.replace(/(^\s*)|(\s*$)/g, ""); }  
String.prototype.LTrim = function(){ return this.replace(/(^\s*)/g, ""); }    
String.prototype.RTrim = function(){ return this.replace(/(\s*$)/g, ""); } 


//图片等比例缩小
var flag=false;
function DrawImage(ImgD, num){
	var image=new Image();	
	image.src=ImgD.src;
	if(image.width>0 && image.height>0){
		flag=true;
		if(image.width/image.height>= 1){
			if(image.width>num){ 
				ImgD.width=num;
				ImgD.height=(image.height*num)/image.width;
			}
			else{
				ImgD.width=image.width; 
				ImgD.height=image.height;
			}
		}
		else{
			if(image.height>num){ 
				ImgD.height=num;
				ImgD.width=(image.width*num)/image.height; 
			}
			else{
				ImgD.width=image.width; 
				ImgD.height=image.height;
			}
		}
	}
} 


window.onload = function(){

	var imgs = document.getElementById("iContent");
	
	if(imgs){

		imgs = imgs.getElementsByTagName("img");
		for(var i = 0 ;i < imgs.length ;i++){
			DrawImage(imgs[i] ,650)
		}

	}
}

//滚动函数
function toleft(demo,demo1,demo2,speed,flag){
	
	demo  = objNode(demo);
	demo1 = objNode(demo1);
	demo2 = objNode(demo2)
	
	demo2.innerHTML=demo1.innerHTML
	
	function Marquee(){
		if(demo2.offsetWidth-demo.scrollLeft<=0){
			demo.scrollLeft -= demo1.offsetWidth
		}else{
			demo.scrollLeft++
		}
	}
	
	flag = setInterval(Marquee,speed)
	demo.onmouseover = function(){clearInterval(flag);}
	demo.onmouseout  = function(){flag=setInterval(Marquee,speed);}
}