//分类节点展开和折叠-------------------------------------------------------------------
function EndSortChange(a,b)
{
	if(eval(a).style.display=='')
	{
		eval(a).style.display='none';
		eval(b).className='SortFolderClose';
	}
	else
	{
		eval(a).style.display='';
		eval(b).className='SortFolderOpen';
	}
}
function SortChange(a,b)
{
	if(eval(a).style.display=='')
	{
		eval(a).style.display='none';
		eval(b).className='SortFolderOpen';
	}
	else
	{
		eval(a).style.display='';
		eval(b).className='SortFolderClose';
	}
}

function resizepic(thispic,paraWidth,paraHeight,paraMethod)
{

		var flag=0;
		switch (paraMethod)
		{
			case 0: 
				flag=0;
				if(thispic.width>=paraWidth){
					thispic.height=thispic.height*paraWidth/thispic.width;
					if (thispic.height<=paraHeight){
						thispic.width=paraWidth;
					}
					else{
						thispic.width=thispic.width*paraHeight/thispic.height;
						if (thispic.width<=paraWidth){
							thispic.height=paraHeight;
						}
					}
					flag=1;
				}
				if (flag=0 && thispic.height>=paraHeight ){
					thispic.width=thispic.width*paraHeight/thispic.height;
		if (thispic.width<=paraWidth){
						thispic.height=paraHeight;
					}
					else{
						thispic.height=thispic.height*paraWidth/thispic.width;
						if (thispic.height<=paraHeight){
							thispic.width=paraWidth;
						}
					}
					flag=1;
				}
				break;
			case 1:
				if(thispic.width>paraWidth){
					thispic.height=thispic.height*paraWidth/thispic.width;
					thispic.width=paraWidth;
				} 
				break;
			case 2: 
				if(thispic.height>paraHeight){
					thispic.width=thispic.width*paraHeight/thispic.height;
					thispic.height=paraHeight;
				} 
				break;
			case 3: 
				thispic.width=paraWidth;
				thispic.height=paraHeight;
				break;
			default:
				alert("参数错误!");   
		} 
}