// 去空格，left,right,all可选
function BaseTrim(str){
	  lIdx=0;rIdx=str.length;
	  if (BaseTrim.arguments.length==2)
	    act=BaseTrim.arguments[1].toLowerCase()
	  else
	    act="all"
      for(var i=0;i<str.length;i++){
	  	thelStr=str.substring(lIdx,lIdx+1)
		therStr=str.substring(rIdx,rIdx-1)
        if ((act=="all" || act=="left") && thelStr==" "){
			lIdx++
        }
        if ((act=="all" || act=="right") && therStr==" "){
			rIdx--
        }
      }
	  str=str.slice(lIdx,rIdx)
      return str
}

// 基本信息提示，得到焦点并选定
function BaseAlert(theText,notice){
	alert(notice);
	theText.focus();
	theText.select();
	return false;
}

// 只允许输入数字
function IsDigit(){
	if (window.opener){
		return true;
	}else{
		return ((event.keyCode >= 48) && (event.keyCode <= 57));
	}
}

// 选颜色
var oInputColor;
var oImgColor;
function selColor(obj, oImg)
{
	oInputColor=obj;
	oImgColor=oImg;
	if (document.all){
		var arr = showModalDialog("selcolor.html", "", "dialogWidth:290px; dialogHeight:280px; status:0; help:0");
		if (arr != null && arr != "")
		{
			obj.value=arr;
			oImg.style.backgroundColor=arr;
		}
	}else{
			var fcolorWin = window.open("","fcolorWin","width=290,height=280");
			if (fcolorWin) {
				fcolorWin.focus();
			}else{
				alert("Please turn off your PopUp blocking software");
				return;
			}
		
			launchParameters = new Object();
			launchParameters['wbtb'] = window;
			launchParameters['commandName'] = 'setColor';
			fcolorWin.launchParameters = launchParameters;
			fcolorWin.location.href="selcolor.html";
	}
}

function setColor(color)
{
	oInputColor.value=color;
	oImgColor.style.backgroundColor=color;
}



// 搜索下拉框值与指定值匹配，并选择匹配项
function SearchSelectValue(o_Select, s_Value){
	for (var i=0;i<o_Select.length;i++){
		if (o_Select.options[i].value == s_Value){
			o_Select.selectedIndex = i;
			return true;
		}
	}
	return false;
}

// 转为数字型，并无前导0，不能转则返回""
function ToInt(str){
	str=BaseTrim(str);
	if (str!=""){
		var sTemp=parseFloat(str);
		if (isNaN(sTemp)){
			str="";
		}else{
			str=sTemp;
		}
	}
	return str;
}

// 是否有效的链接
function IsURL(url){
	var sTemp;
	var b=true;
	sTemp=url.substring(0,7);
	sTemp=sTemp.toUpperCase();
	if ((sTemp!="HTTP://")||(url.length<10)){
		b=false;
	}
	return b;
}

// 是否有效的扩展名
function IsExt(url, opt){
	var sTemp;
	var b=false;
	var s=opt.toUpperCase().split("|");
	for (var i=0;i<s.length ;i++ ){
		sTemp=url.substr(url.length-s[i].length-1);
		sTemp=sTemp.toUpperCase();
		s[i]="."+s[i];
		if (s[i]==sTemp){
			b=true;
			break;
		}
	}
	return b;
}

function correctPNG() // correctly handle PNG transparency in Win IE 5.5 & 6.
{
   var arVersion = navigator.appVersion.split("MSIE")
   var version = parseFloat(arVersion[1])
   if ((version >= 5.5) && (document.body.filters)) 
   {
      for(var j=0; j<document.images.length; j++)
      {
         var img = document.images[j]
         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
            j = j-1;
         }
      }
   }    
}
window.attachEvent("onload", correctPNG);