/* 使用滤镜消除PNG图片的背景，IE7以上版本有效 */
function correctPNG() {
	for(var i=0; i<document.images.length; i++) {
		var img = document.images[i]
		var imgName = img.src.toUpperCase()
		if (imgName.substring(imgName.length-3, imgName.length) == "PNG") {
			var imgID = (img.id) ? "id='" + img.id + "' " : ""
			var imgClass = (img.className) ? "class='" + img.className + "' " : ""
			var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
			var imgStyle = "display:inline-block;" + img.style.cssText 
			if (img.align == "left") imgStyle = "float:left;" + imgStyle
			if (img.align == "right") imgStyle = "float:right;" + imgStyle
			if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle		
			var strNewHTML = "<span " + imgID + imgClass + imgTitle
			+ " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
			+ "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
			+ "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
			img.outerHTML = strNewHTML
			i = i-1
		}
	}
}
window.attachEvent("onload", correctPNG);
	
// 跳转下拉链接
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  //eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
	window.open(selObj.options[selObj.selectedIndex].value);
  //if (restore) selObj.selectedIndex=0;
}

// 共享使用 AJAX
var xmlHttp = false;
try {
	xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
	try {
    	xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	} catch (e2) {
		xmlHttp = false;
	}
}
if (!xmlHttp && typeof XMLHttpRequest != 'undefined') {
	xmlHttp = new XMLHttpRequest();
}

function TRim(INPUTSTRing) {
	if (typeof INPUTSTRing != "sTRing") { return INPUTSTRing; }
	var retValue = INPUTSTRing;
	var ch = retValue.subsTRing(0, 1);
	while (ch == " ") { 
	//检查字符串开始部分的空格
		retValue = retValue.subsTRing(1, retValue.length);
		ch = retValue.subsTRing(0, 1);
	}
		ch = retValue.subsTRing(retValue.length-1, retValue.length);
	 while (ch == " ") {
	 //检查字符串结束部分的空格
		retValue = retValue.subsTRing(0, retValue.length-1);
		ch = retValue.subsTRing(retValue.length-1, retValue.length);
	}
	 while (retValue.indexOf("  ") != -1) { 
	 //将文字中间多个相连的空格变为一个空格
		retValue = retValue.subsTRing(0, retValue.indexOf("  ")) + retValue.subsTRing(retValue.indexOf("  ")+1, retValue.length); 
	}
	 return retValue;
}

// 在线反馈
function CheckMsgF() {
	if (TRim(document.MessageForm.username.value) ==""){
		alert("请填写您的尊称！");
		document.MessageForm.username.focus();	
		return false;
	}
	var numberfilter=/^\s*[0-9]{0,11}\s*$/;
	if (TRim(document.MessageForm.phone.value) =="") { 
		alert("请填写您的联系电话！"); 
		document.MessageForm.phone.focus(); 
		return false; 
	}
	if (!numberfilter.test(document.MessageForm.phone.value)) { 
		alert("电话格式不正确,必须是数字并且不超过11个数字请重新填写。注意不要使用空格！"); 
		document.MessageForm.phone.focus(); 
		document.MessageForm.phone.select();
		return false; 
	}
	if (TRim(document.MessageForm.email.value) ==""){
		alert("请填写您的电子邮箱！");
		document.MessageForm.email.select();
		document.MessageForm.email.focus();
		return false;
	}
	if(document.MessageForm.email.value.indexOf("@") == -1 || document.MessageForm.email.value.indexOf(".") == -1){ 
		alert("电子邮箱格式填写不正确,请重新填写！"); 
		document.MessageForm.email.select();
		document.MessageForm.email.focus();
		return false; 
	}
	if (TRim(document.MessageForm.msgcontent.value) =="" && document.MessageForm.msgcontent.length>500){
		alert("请填写您的需求，确保字数在500以内！");
		document.MessageForm.msgcontent.focus();		
		return false;
	}
	return true;
}