var PageName;
var PageExt;

function createPageHTML(_nPageCount, _nCurrIndex, _sPageName, _sPageExt){ 
	if(_nPageCount == null || _nPageCount<=1){
 		return; 
	} 
	PageName = _sPageName;
	PageExt = _sPageExt;
	
	var nCurrIndex = _nCurrIndex || 0; 
	var nTail = _nPageCount - 1;
	var nNext = nCurrIndex + 1;
	var nPre = nCurrIndex - 1;
	
	if(nCurrIndex == 0) {
		document.write("[首页]"); 
		document.write("[上一页]&nbsp;");
	} else { 
		document.write("<a href=\""+_sPageName+"."+_sPageExt+"\">[首页]</a>&nbsp;");
		if (nCurrIndex == 1) {
			document.write("<a href=\""+_sPageName+"."+_sPageExt+"\">[上一页]</a>&nbsp;"); 
		} else {
			document.write("<a href=\""+_sPageName+"_" + nPre + "."+_sPageExt+"\">[上一页]</a>&nbsp;");
		}
	}

	if(nCurrIndex == _nPageCount-1) {
		document.write("[下一页]&nbsp;");
		document.write("[尾页]"); 
	} else { 
		document.write("<a href=\""+_sPageName+"_" + nNext + "."+_sPageExt+"\">[下一页]</a>&nbsp;");
		document.write("<a href=\""+_sPageName+"_" + nTail + "."+_sPageExt+"\">[尾页]</a>&nbsp;"); 
	}

	document.write("20条记录/页 共"+_nPageCount+"页 "); 

	document.write("跳转到：");
	document.write('<select onChange="jumpPage(this.value)">');
	for(var i=1; i<=_nPageCount; i++){ 
		if(nCurrIndex == i-1) 
			document.write("<option value=" + i + " selected>" + i + "</option>"); 
		else 
			document.write("<option value=" + i + ">" + i + "</option>"); 
	} 
	
} 

function jumpPage(nPage) {
	var nPageTo = nPage - 1;
	if (nPage == 1) {
		document.location = PageName + "." + PageExt;
	} else {
		document.location = PageName + "_" + nPageTo + "." + PageExt;
	}
}