//browser check

agt=navigator.userAgent.toLowerCase();
ie=(document.all) ? 1:0
ie4=(agt.indexOf('msie 4')!=-1) ? 1:0
ie5=(agt.indexOf('msie 5')!=-1) ? 1:0
ie6=(agt.indexOf('msie 6')!=-1) ? 1:0
ns4=(document.layers && parseInt(navigator.appVersion)>=4) ? 1:0
win=( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) )
mac=(agt.indexOf("mac")!=-1);
imgs=(document.images) ? 1:0

ig_ie=(ie5||ie6)?1:0
ig_ns=(ns4)?1:0

ig_timeoout=1

 
//code for drops

function ig_showdrop(thelayer){
	ig_keep=thelayer; ig_hideall(); checkpos=0; ig_showitnow=1
	ig_showit(thelayer)
	}

function ig_showit(thelayer){
		if(ig_ie){ eval(ig_droplayer[thelayer]+'.style.visibility="visible"') }
		if(ig_ns){ eval('document.'+ig_droplayer[thelayer]+'.visibility="show"');}
	}

function ig_hidedrop(){
	ig_keep=-1; 
	checkpos=1;
	setTimeout('ig_hideall()',ig_timeoout)
}

ig_keep=-1

function ig_hideall(){
	for(i=0;i<ig_droplayer.length;i++){  
	
		 
		if(ig_ie && ig_keep!=i){ 
			eval(ig_droplayer[i]+'.style.visibility="hidden"')
		}
		if (ig_ns) {
			ig_hideit=0; ig_checkmousepos(i)
			if(ig_hideit){ 
				eval('document.'+ig_droplayer[i]+'.visibility="hide"')
			}
		}
	}

//deal with cursor over layer

	if (ig_ns) {
		document.onmousemove = ig_getmousepos
		document.captureEvents(Event.MOUSEMOVE)
	}
}

function ig_getmousepos(e){
	if(ig_ns){ig_mousex=e.pageX; ig_mousey=e.pageY}
}

checkpos=0

function ig_checkmousepos(i){ 
  if(ig_ns && checkpos){ 
    ig_x_min=eval('document.'+ig_droplayer[i]+'.left')
    ig_x_max=ig_x_min+eval('document.'+ ig_droplayer[i]+ '.clip.width')
    ig_y_min=eval('document.'+ig_droplayer[i]+'.top') 
    ig_y_max=ig_y_min+eval('document.'+ ig_droplayer[i]+ '.clip.height')
	if (ig_mousex>=ig_x_min && ig_mousex<=ig_x_max && ig_mousey>=ig_y_min && ig_mousey<=ig_y_max){
		ig_hideit=0; setTimeout('ig_hideall()',ig_timeoout)
  	 }
	else { ig_hideit=1 }
	  return ig_hideit
	}
}