if (document.all)    {n=0;ie=1;ns6=0;fShow="visible";fHide="hidden";}
if (document.getElementById&&!document.all)    {n=0;ie=0;ns6=1;fShow="visible";fHide="hidden";}
if (document.layers) {n=1;ie=0;ns6=0;fShow="show";fHide="hide";}


			function changeBGcolor(id,color) {
				if (document.getElementById && document.getElementById(id))	{
					document.getElementById(id).style.background = color;
					return true;
				} else if (document.layers && document.layers[id]) {
			        document.layers[id].bgColor = color;
					return true;
			    }
			}


			
function popUp(menuName,on) {
	if (gotlayers) {
		if (on) {

			if (n)	{
				submenu = document.layers[menuName];
				submenu.visibility = fShow;
			} else if (ie||ns6) {
				submenu = ie? eval(menuName+".style") : document.getElementById(menuName).style;
				submenu.visibility = fShow;
			}

		} else {
			if (n)	{
				submenu = document.layers[menuName];
				submenu.visibility = fHide;
			} else if (ie||ns6) {
				submenu = ie? eval(menuName+".style") : document.getElementById(menuName).style;
				submenu.visibility = fHide;
			}
		}
	}
}
			
function movepic(img_name,type) {
  if (gotlayers==1)
  {
	active="#BABA97";
	passive="#F2E498";
	document[img_name].src=eval(img_name+"_"+type+".src");
	if (type=="1")
	{
		tec=active;
		on=true;
	}
	if (type=="2")
	{
		tec=passive;
		on=false;
	}	
		if (img_name == "but1" )
		{
				changeBGcolor("td_portfolio",tec);
				popUp("div_portfolio",on);
		}
		if (img_name == "but2" )
		{
				changeBGcolor("td_service",tec);
				popUp("div_service",on);
		}
		if (img_name == "but3" )
		{
				changeBGcolor("td_read",tec);
				popUp("div_read",on);
		}
		if (img_name == "but4" )
		{
				changeBGcolor("td_about",tec);
				popUp("div_about",on);
		}

  }

}


if (document.images) {
            but1_2 = new Image();      
            but1_2.src = "images/portfolio.gif"; 
            but1_1 = new Image();      
            but1_1.src = "images/active/portfolio.gif";

            but2_2 = new Image();      
            but2_2.src = "images/service.gif"; 
            but2_1 = new Image();      
            but2_1.src = "images/active/service.gif";

            but3_2 = new Image();      
            but3_2.src = "images/read.gif"; 
            but3_1 = new Image();      
            but3_1.src = "images/active/read.gif";

            but4_2 = new Image();      
            but4_2.src = "images/about.gif"; 
            but4_1 = new Image();      
            but4_1.src = "images/active/about.gif";



}