function ShowBuild() 
{ 
//在屏幕中央显示窗口

	leftTemp = screen.availWidth/2-220
	topTemp = screen.availHeight/2-130
	strWinCfg = "left="+leftTemp+",top="+topTemp+",height=410,width=356"
	window.open("Build.htm","ShopCartWin",strWinCfg);
}