function Tab(options){
	this.commonCss = options.commonCss || 'zwxxtitle';
	this.hoverCss = options.hovercss || 'zcfgtitle';
	this.headIdArr = [];
	this.contentIdArr = [];
	if(options.headIdArr){
		this.headIdArr = options.headIdArr;
	}
	if(options.contentIdArr){
		this.contentIdArr = options.contentIdArr;
	}
	
	this.toggle = function(srcObj){
		if(!srcObj){
			return false;
		}
		var srcId = srcObj.id;
		for(var i=0; i<this.headIdArr.length; i++){
		    if(this.headIdArr[i] == srcId){
				var obj = document.getElementById(this.headIdArr[i]);
				obj.className = this.hoverCss;
				var contentObj = document.getElementById(this.contentIdArr[i]);
				contentObj.style.display = '';
			}else{
				var obj = document.getElementById(this.headIdArr[i]);
				obj.className = this.commonCss;
				var contentObj = document.getElementById(this.contentIdArr[i]);
				contentObj.style.display = 'none';
			}
		}
	};
	
	this.init = function(headId){
		if(!headId){
			headId = this.headIdArr[0]; 
		}
		var srcObj = document.getElementById(headId);
		this.toggle(srcObj);
	};
}