function openMenu(id,og) {
 var i,s,c,k,j,tN,hh;
 var b = document.getElementById(id);
 //swapImage(plus1);
 if(b){
 	if(b.parentNode && b.parentNode.childNodes){
		tN=b.parentNode.childNodes;
	} else {
		return;
	}
	for(i=0;i<tN.length;i++){
		if(tN[i].tagName=="DIV"){
			s=tN[i].style.display;
			hh=(s=="block")?"none":"block";
			if(og==1){
				hh="block";
			}
			tN[i].style.display=hh;
		}
	}
	c=b.firstChild;
	if(c.data){
		k=c.data;
		j=k.charAt(0);
		if(j=='+'){
			k='-'+k.substring(1,k.length);
			// }else if(j=='-'){k='+'+k.substring(1,k.length);}c.data=k;}if(b.className=='p7plusmark'){
			// b.className='p7minusmark';}else if(b.className=='p7minusmark'){b.className='p7plusmark';}}
		} else if(j=='-'){
			k='+'+k.substring(1,k.length);
		}
		c.data=k;
	}
	if(b.className=='p7plusmark'){
  		if(hh=='block'){
			b.className='p7minusmark';
		}
	} else if(b.className=='p7minusmark'){
		if(hh=='none'){
			b.className='p7plusmark';
		}
	}
 }
}

function swapImage2(name) {
var img = document.getElementById(name);
switch (img.src) {
 case "http://www.montana.edu/msucommon/images/p7t_minus.gif":
   img.src = "http://www.montana.edu/msucommon/images/p7t_plus.gif"
   return(false);
 case "http://www.montana.edu/msucommon/images/p7t_plus.gif":
   img.src = "http://www.montana.edu/msucommon/images/p7t_minus.gif"
   return(false);
 }
}