/**
*@author webning
*/
function Form(form)
{
	this.init = function(obj)
	{
		for(var item in obj)
		{
			this.setValue(item,obj[item]);
		}
	}
	this.getItems = function()
	{
		var obj=new Object();
		var elements;
        if(form == undefined) elements = document.forms[0].elements;
        else	elements=document.forms[form].elements;
		var len = elements.length;
		for(var i=0;i<len;i++)
		{
			if(obj[elements[i].name] == undefined) obj[elements[i].name]=this.getValue(elements[i].name);
		}
		return obj;
	}
	this.formatRequest = function()
	{
		var elements = this.getItems();
		var tem='';
		for(i in elements)
		{
			if(i!='')tem+='&'+i+'='+elements[i];
		}
		return tem.substr(1);
	}
	this.setValue=function(name,value)
	{
        var e;
        if(form == undefined) e = document.forms[0].elements[name];
        else	e=document.forms[form].elements[name];
		if(e==undefined) return;
		switch(e.type)
		{
			case 'text':
			case 'hidden':
			case 'textarea':e.value=value;break;
			case 'radio':
			case 'checkbox':
			{
				if(e.value==value)e.checked=true;
				break;
			}
			case 'select-one': this.setSelected(e,value);break;
			case 'select-multiple':
			{
				var len=e.length;
				if (len>0)
				{
					var _value = (';'+value+';');
					for(var j=0;j<len;j++)
					{
						if(e[j]!=undefined)
						{
						if(value==e[j].value || _value.indexOf(";"+e[j].value+";")!=-1 || value.indexOf(";"+e[j].innerHTML+";")!=-1){e[j].selected=true;}
					}
					}
				}
				break;
			}
			default:
			{
				var len=e.length;
				if (len>0)
				{
					var _value = (';'+value+';');
					for(var j=0;j<len;j++)
					{
						if(e[j]!=undefined)
						{
							if(value==e[j].value || _value.indexOf(";"+e[j].value+";")!=-1)e[j].checked=true;
						}
					}
				}
				break;
			}
		}
	}
	this.getValue = function(name)
	{
		var e;
        if(form == undefined) e = document.forms[0].elements[name];
        else	e=document.forms[form].elements[name];
		if(e==undefined) return null;
		switch(e.type)
		{
			case 'text':
			case 'hidden':
			case 'textarea':return e.value;break;
			case 'radio':
			case 'checkbox':
			{
				if(e.checked)e.value;
				break;
			}
			case undefined:
			{
				var len=e.length;
				var tmp = '';
				if (len>0)
				{
					for(var j=0;j<len;j++)
					{
						if(e[j]!=undefined)
						{
							if(e[j].checked)
							{
								if(e[j].value!='') tmp += e[j].value+';';
								else tmp += e[j].innerText+';';
							}
						}
					}
				}
				if(tmp.length>0) tmp = tmp.substring(0,(tmp.length-1));
				if(tmp!='')return tmp;
				else return null;
				break;
			}
			case 'select-one': return e.value;break;
			case 'select-multiple':
			{
				var len=e.length;
				if (len>0)
				{
					var tmp = '';
					for(var j=0;j<len;j++)
					{

						if(e[j]!=undefined)
						{
							if(e[j].checked)
							{
								if(e[j].value!='') tem += e[j].value+';';
								else tem += e[j].innerText+';';
							}
						}
					}
				}
				if(tmp.length>0) tmp = tmp.substring(0,(tmp.length-1));
				if(tmp!='')return tmp;
				else return null;
				break;
			}

		}
	}
	this.setSelected = function(obj,value)
	{
		objSelect=obj;
	    for(var i=0;i<objSelect.options.length;i++)
	    {
	        if(objSelect.options[i].value == value || objSelect.options[i].text == value)
	        {
	            objSelect.options[i].selected = true;
	            break;
	        }
	     }
	}
}