//产品页切换
var dangQianYe=1;
function huanYe(obj){
	var thisId=obj.getAttribute('id');
	for(var i=1;i<=2;i++) $("#pro"+i).css("display","none"),$("#"+i).css("color","#000");
	$("#pro"+thisId).css("display","");
	$("#"+thisId).css("color","#f00");
	dangQianYe=parseInt(thisId);
	}
function backYe(){
	if(dangQianYe==1) return(alert("这里已是第一页"));
	for(var i=1;i<=2;i++) $("#pro"+i).css("display","none"),$("#"+i).css("color","#000");
	dangQianYe=dangQianYe-1;
	$("#pro"+(dangQianYe)).css("display","");
	$("#"+dangQianYe).css("color","#f00");
	}
function nextYe(){
	if(dangQianYe==2) return(alert("这里已是最后一页"));
	for(var i=1;i<=2;i++) $("#pro"+i).css("display","none"),$("#"+i).css("color","#000");
	dangQianYe=dangQianYe+1;
	$("#pro"+(dangQianYe)).css("display","");
	$("#"+dangQianYe).css("color","#f00");
	}
//产品放大显示相关函数
function showPro(){
	var widthAndHeight=getPageSize();
	var arrayPageScroll=getPageScroll();
	var HTMLx=widthAndHeight[0];
	var HTMLy=widthAndHeight[3];
	$("#FangDa_bg").css("display","");
	$("#photo1FangDa").css("display","").css("left",((HTMLx-20 - 500) / 2) + 'px');
	$("#photo1FangDa").css('top',arrayPageScroll[1] + ((HTMLy  - 580) / 2) + 'px');
	$("html").css("width","100%").css("height","100%").css("overflow","hidden");
	}
function hidePro(){
	$("#FangDa_bg").css("display","none");
	$("#photo1FangDa").css("display","none");
	$("html").css("overflow","");
	}
//
/*======================================================*/
//获取页面实际大小
function getPageSize(){ 

    var xScroll, yScroll; 

    if (window.innerHeight && window.scrollMaxY) { 
        xScroll = document.body.scrollWidth; 
        yScroll = window.innerHeight + window.scrollMaxY; 
    } else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac 
        xScroll = document.body.scrollWidth; 
        yScroll = document.body.scrollHeight; 
    } else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari 
        xScroll = document.body.offsetWidth; 
        yScroll = document.body.offsetHeight; 
    } 

    var windowWidth, windowHeight; 
    if (self.innerHeight) { // all except Explorer 
        windowWidth = self.innerWidth; 
        windowHeight = self.innerHeight; 
    } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode 
        windowWidth = document.documentElement.clientWidth; 
        windowHeight = document.documentElement.clientHeight; 
    } else if (document.body) { // other Explorers 
        windowWidth = document.body.clientWidth; 
        windowHeight = document.body.clientHeight; 
    } 

    // for small pages with total height less then height of the viewport 
    if(yScroll < windowHeight){ 
        pageHeight = windowHeight; 
    } else { 
        pageHeight = yScroll; 
    } 

    // for small pages with total width less then width of the viewport 
    if(xScroll < windowWidth){ 
        pageWidth = windowWidth; 
    } else { 
        pageWidth = xScroll; 
    } 
    //
    arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
    return arrayPageSize; 
}
//获取滚动条的高度 
function getPageScroll(){
var yScroll; 
if (self.pageYOffset) { 
yScroll = self.pageYOffset; 
} else if (document.documentElement && document.documentElement.scrollTop){ // Explorer 6 Strict 
yScroll = document.documentElement.scrollTop; 
} else if (document.body) {// all other Explorers 
yScroll = document.body.scrollTop; 
} 
arrayPageScroll = new Array('',yScroll) 
return arrayPageScroll; 
}