/* 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);

	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;
	}



	// 搜索关键字判断--中文版
	function CheckSearch() {
		var key=document.getElementById("Keyword").value;
		if(key == "" || key == "Product Name") {
			alert("Please enter product name!");
			return false;
		}
	}
	
	function clearText(field){
		if (field.defaultValue == field.value) field.value = '';	
		else if (field.value =='') field.value = field.defaultValue;
	}
	
	
	function CheckMsgForm() {
		if(TRim(document.MessageForm.username.value) == "") {
			alert("Please enter contact!");
			document.MessageForm.username.focus();
			return false;
		}
		if (TRim(document.MessageForm.email.value) == ""){
			alert('Please enter your e-mail!');
			document.MessageForm.email.focus();
			return false;
		}
		if (document.MessageForm.email.value.indexOf("@")==-1|document.MessageForm.email.value.indexOf(".")==-1){
			alert("Please enter a correctly formatted e-mail!");
			document.MessageForm.email.focus();
			return false;
		}
		var numberfilter=/^\s*[0-9]{0,12}\s*$/;
		if(TRim(document.MessageForm.phone.value) == ""){
			alert('Please enter your contact phone number!');
			document.MessageForm.phone.focus();
			return false;
		}
		if (!numberfilter.test(document.MessageForm.phone.value)) {
			alert("Telephone format not correct, you must be a number and does not exceed 12 digits, please re-fill. Note Do not use spaces!"); 
			document.MessageForm.phone.focus();
			document.MessageForm.phone.select();
			return false; 
		}
		if(TRim(document.MessageForm.msgcontent.value) == "") {
			alert("Please enter a message content!");
			document.MessageForm.msgcontent.focus();
			return false;
		}
		return true;
	}
	
	
	function SetMouseover(tag,method) {
		//for(i=1; i<tt; i++) {
			//alert("item: "+item+" method: "+method);
			if(method=="h_on"){
			   //alert("item: "+item+" method: "+method);
				document.getElementById(tag).className='fontnew';
			}else if(method=="h_off"){
				document.getElementById(tag).className='font666';
			}
		//}
	}
	
	//鼠标移动变换按钮的图片，鼠标移开时的样式
	function SetMouseout(tag,method) {
		//for(i=1; i<tt; i++) {
			if(method=="h_on"){
				document.getElementById(tag).className="fontnew";
			}else if(method=="h_off"){
				document.getElementById(tag).className='font666';
			}
		//}
	}