/* *******************************************************
Software: Web Wiz Forums
Info: http://www.webwizforums.com
Copyright: ©2001-2007 Web Wiz. All rights reserved
******************************************************* */

//function to change page from option list
function linkURL(URL) {
	if (URL.options[URL.selectedIndex].value != "") self.location.href = URL.options[URL.selectedIndex].value;	
	return true;
}

//function to open pop up window
function winOpener(theURL, winName, scrollbars, resizable, width, height) {
	
	winFeatures = 'left=' + (screen.availWidth-10-width)/2 + ',top=' + (screen.availHeight-30-height)/2 + ',scrollbars=' + scrollbars + ',resizable=' + resizable + ',width=' + width + ',height=' + height + ',toolbar=0,location=0,status=1,menubar=0'
  	window.open(theURL, winName, winFeatures);
}

//Show drop down
function showDropDown(parentEle, dropDownEle, dropDownWidth, offSetRight){
	
	parentElement = document.getElementById(parentEle);
	dropDownElement = document.getElementById(dropDownEle)
	
	//position
	dropDownElement.style.left = (getOffsetLeft(parentElement) - offSetRight) + 'px';
	dropDownElement.style.top = (getOffsetTop(parentElement) + parentElement.offsetHeight + 3) + 'px';
	
	//width
	dropDownElement.style.width = dropDownWidth + 'px';

	//display
	hideDropDown();
	dropDownElement.style.visibility = 'visible';
	
	
	//Event Listener to hide drop down
	if(document.addEventListener){ // Mozilla, Netscape, Firefox
		document.addEventListener('mouseup', hideDropDown, false);
	} else { // IE
		document.onmouseup = hideDropDown;
	}
}

//Hide drop downs
function hideDropDown(){
	hide('div');
	hide('iframe');
	function hide(tag){
		var classElements = new Array();
		var els = document.getElementsByTagName(tag);
		var elsLen = els.length;
		var pattern = new RegExp('(^|\\s)dropDown(.*\)');
		
		for (i = 0, j = 0; i < elsLen; i++) {
			if ( pattern.test(els[i].className) ) {
				els[i].style.visibility='hidden';
				j++;
			}
		}
	}	
}


//Top offset
function getOffsetTop(elm){
	var mOffsetTop = elm.offsetTop;
	var mOffsetParent = elm.offsetParent;
	while(mOffsetParent){
		mOffsetTop += mOffsetParent.offsetTop;
		mOffsetParent = mOffsetParent.offsetParent;
	}
	return mOffsetTop;
}

//Left offset
function getOffsetLeft(elm){
	var mOffsetLeft = elm.offsetLeft;
	var mOffsetParent = elm.offsetParent;
	while(mOffsetParent){
		mOffsetLeft += mOffsetParent.offsetLeft;
		mOffsetParent = mOffsetParent.offsetParent;
	}
	return mOffsetLeft;
}

//AJAX
var xmlHttp;
var xmlHttpResponseID;
	
//create XMLHttpRequest object
function createXMLHttpRequest(){
	if (window.XMLHttpRequest){
		xmlHttp = new XMLHttpRequest();
	}else if (window.ActiveXObject){
		xmlHttp = new ActiveXObject('Msxml2.XMLHTTP');
		if (! xmlHttp){
			xmlHttp = new ActiveXObject('Microsoft.XMLHTTP');
		}	
	}
}

//XMLHttpRequest event handler
function XMLHttpResponse(){
	if (xmlHttp.readyState == 4 || xmlHttp.readyState=='complete'){
		if (xmlHttp.status == 200){
			xmlHttpResponseID.innerHTML = xmlHttp.responseText;
		}else {
			xmlHttpResponseID.innerHTML = '<strong>Error connecting to server</strong>';
		}

	}
}

//Get AJAX data
function getAjaxData(url, elementID){
	xmlHttpResponseID = document.getElementById(elementID);
	xmlHttpResponseID.innerHTML = '<strong>Loading...</strong>';
	createXMLHttpRequest();
	xmlHttp.onreadystatechange = XMLHttpResponse;
	xmlHttp.open("GET", url, true);
	xmlHttp.send(null);
}	

//ÒÔÏÂΪSTONEÔö¼ÓµÄ´úÂë

//¶¨ÒåÈ«ÆÁÄ»µ¯³ö´°¿Úº¯Êý
function FullwindowOpener(theFullwindowURL, FullwindowName) {
	
		FullwindowFeatures = 'fullscreen,left=0,top=0,scrollbars=1,resizable=0,toolbar=0,location=0,status=0,menubar=0'
  	window.open(theFullwindowURL, FullwindowName, FullwindowFeatures);
}


//ÒÔϺ¯ÊýÓÃÓÚ¿ØÖÆͼƬ¿í¶È
//¿í¶ÈÖµÏÞ¶¨Îª500£¬ÈçÐè¸ü¸ÄÇëÔÚϼ¸ÐдúÂëÖÐÑ°ÕÒ¸ü¸Ä£¬¹²Èý´¦
function resizeImages() {
	
	 
          if (document.images.length > 0)          //Has images, validate sizes 
          { 
               var imgHeight; 
               var imgWidth; 
               for (var loop = 0; loop < document.images.length; loop++) 
               { 
                    if (document.images[loop].name.substring(0,6) == 'chkImg') 
                    { 
                         imgWidth = document.images[loop].width; 
                         imgHeight = document.images[loop].height; 
                          
                         if (imgWidth > 640) 
                         { 
                              document.images[loop].width = 640; 
                              //Proportionalize Height 
                              imgHeight = imgHeight / (imgWidth/640); 
                              document.images[loop].height = imgHeight; 
                         } 
                    } 
               } 
          } 

}