一些在应用中常用的JS函数

//功能介绍：检查字符串的长度,汉字算二个字节              

function fucCheckLength(strTemp)                                  
{                                  
    var i,sum;                                  
    sum=0;                                  
    for(i=0;i<strTemp.length;i++)                                  
    {                                  
        if ((strTemp.charCodeAt(i)>=0) && (strTemp.charCodeAt(i)<=255))                                  
            sum=sum+1;                                  
        else                                  
            sum=sum+2;                                  
    }                                  
    return sum;                                  
}

//忽略页面的JS代码处理
function ClientScriptErrorHandler()
{
    return(true);
}

window.onerror=ClientScriptErrorHandler;

//在跳转到某个URL前提示确认,例如,删除前
function ConfirmDelete(Url,Msg)
{
    if(confirm(Msg))
    {        
        window.location.href=Url;
    }
}

//显示IE的Popup窗口
var oPopup = window.createPopup();
function ShowToolTip(HtmlText,Width,Height)
{
if(oPopup!=null)
    {
    var lefter = event.offsetY+10;
    var topper = event.offsetX+10;
    oPopup.document.body.innerHTML ="<table border=1 bordercolor=#cccccc bgcolor=#fefef8 style=border-collapse:collapse;font-size:9pt  cellpadding=0 cellspacing=0 align=center width='100%' height='100%'><tr><td align=center valign=middle height='100%'>"+HtmlText+"</td></tr></table>"; 
    oPopup.document.body.style.overflow="hidden"
    //oPopup.document.body.style.filter='progid:DXImageTransform.Microsoft.Gradient(GradientType=0,StartColorStr=gold, EndColorStr=#FFFFFF)';
    oPopup.show(topper, lefter, Width, Height, event.srcElement);
    }
}

//隐藏IE的Popup窗口
function HideToolTip()
{
    oPopup.hide();
}

//限制只能输入数字的函数
function Number_KeyPressHandler(ctrl)
{    
    if (event.keyCode==13)
        return(true);
    if(event.keyCode<48||event.keyCode>57)
        return(false);
    else
        return(true);
}