/**
 * ????????????????????????
 *
 */
function isBlank( txt )
{
    if ( txt == null || txt == "" )  {
        return true;
    }
    var spaceCount = 0;
    for( i = 0; i < txt.length; i++ ) {
        if( (txt.substring(i,i + 1) == " ") || (txt.substring(i,i + 1) == "\u3000") ) {
            spaceCount++;
        }
    }
    if( txt.length == spaceCount ) {
        return true;
    } else {
        return false;
    }
}

 /**
  * ????????????TAB?????????
  *
 */ 
 function jsAllTerm(str)   
 {
   return str.replace(/[ \t]+/g,"");
 }
 
 /**
  * ????????????TAB?????????
  *
 */ 
  function jsTerm(str)
  {
    return str.replace(/(^[ \t]+)|([ \t]+$)/g,"");
  }  
 
  
  /**
  * ????????????????????????????????????
  * ??????????????????????????????????????????
  */
  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;
  }
  
  /**
  * ??????????????????
  *
  */
  function getObjWidth(obj){
    return(parseInt(obj.offsetWidth));  
    //return(parseInt(obj.clientWidth));
  }
  /**
  * ??????????????????
  *
  */
  function getObjHeight(obj){
    return(parseInt(obj.offsetHeight));  
    //return(parseInt(obj.clientHeight));
  }
  
  function G_Invalid(event){
    var e = window.event || event;
    //alert(e);
    e.k = e.keyCode || e.which;
    //alert(k);
    if((e.k > 113  && e.k < 123) ||             /* fn key press */
       (e.k == 27) ||                         /* esc key press */
       (e.k == 36)) {                         /* Home key press */
	     if(window.event){
	       window.event.keyCode = 0;
	       window.event.returnValue  = false;
	     }else{
		     e.k = 0;
		     event.preventDefault();
	     }        
    }
    if(e.ctrlKey == true) {                /* ctrl key press */
      if((e.k == 78) ||                      /* n key press */
         (e.k == 82)) {                      /* r key press */
	      if(window.event){
	        window.event.keyCode = 0;
	        window.event.returnValue  = false;
	      }else{
		      e.k = 0;
		      event.preventDefault();
	      }        
      }
    }
    if(e.k == 13){
    }
  }
  
    /**
    *
    *
    */
    function fckInsertHTML(fckName, htmlCode){
	    // Get the editor instance that we want to interact with.
	    var oEditor = FCKeditorAPI.GetInstance(fckName) ;
    	// Check the active editing mode.
	    if( oEditor.EditMode == FCK_EDITMODE_WYSIWYG ){
		    // Insert the desired HTML.
		    oEditor.InsertHtml(htmlCode) ;
	    }else{
		    alert( 'You must be on WYSIWYG mode!' ) ;
		  }
		}
		/**
		*
		*
		*/
    function fckGetLength(id){
    	// This functions shows that you can interact directly with the editor area
    	// DOM. In this way you have the freedom to do anything you want with it.
     	// Get the editor instance that we want to interact with.
     	var oEditor = FCKeditorAPI.GetInstance(id) ;
     	// Get the Editor Area DOM (Document object).
     	var oDOM = oEditor.EditorDocument ;
	    var iLength ;
     	// The are two diffent ways to get the text (without HTML markups).
     	// It is browser specific.
     	if (document.all){// If Internet Explorer.
     		iLength = oDOM.body.innerText.length ;
	    }else{ // If Gecko.
     		var r = oDOM.createRange() ;
		    r.selectNodeContents( oDOM.body ) ;
     		iLength = r.toString().length ;
	    }
	    return iLength;
    }
    
    /**
    *
    *
    */
    function ExecuteCommand(fckName, commandName ){
	    // Get the editor instance that we want to interact with.
	    var oEditor = FCKeditorAPI.GetInstance(fckName) ;
	    // Execute the command.
      oEditor.Commands.GetCommand( commandName ).Execute() ;
    }
    
     /**
     *
     *
     */                     
     function f_loadjs(scriptid,jsurl){
       var scriptTag = document.getElementById(scriptid);
       if(scriptTag) document.body.removeChild(scriptTag);
       script = document.createElement('script');
       script.setAttribute( "src" , jsurl);
       script.type = 'text/javascript';
       script.id = scriptid;
       document.body.appendChild(script);
     } 
     
     
    // the article's name can't end with a bar adds a digital(eg: xxxx-3 is invalid)
    function isEndWithRailAndNumber(name){
     	var pattern = /^.*-\d+$/;
		var xx = pattern.test(name);
		if(xx){
			return true;
		}
		return false;
    } 
     
    // avoid repetition submission 
    var isCommited = false;
	function checkCommit(){
		if(isCommited == false){
			isCommited = true;
			return true;
		}else{
			alert("You have committed , please waitting .........");
			return false;
		}
	}
	
    /**
     * get a string's real length
     * if it containt some chinese character, we think the length of a chinese character is 3, 
     * although sometimes it's length is 2 
     */
   	function getRealLength(str){
   		if(str == ""){
   			return 0;
   		}
		str =  str.replace(/(^\s*)|(\s*$)/g,"");  // remove blank space
		str = str.replace(/[\u4e00-\u9fa5]/g, "chs");  // one Chinese character's length is 3
		return str.length;		
	} 
     
    // remove blank space 
    function trimStr(str){
		return str.replace(/(^\s*)|(\s*$)/g,"");	
	}