var browser,sys='win';

if(document.layers)browser='ns4';
else if(navigator.appName.indexOf('Netscape')!=-1)browser='ns6';
else {browser='ie';}
if(navigator.platform.indexOf('Win')==-1&&navigator.platform.indexOf('win')==-1)sys='mac';


function dfind(tar) 
{
	switch(browser)
	{
		case'ie':{return document.all[tar];break;}
		case'ns4':{return eval('document.'+tar);break;}
		case'ns6':{return document.getElementById(tar);break;}
	}
	//alert(browser);
	return null;
}

function dstyle(tar) 
{
	if(browser!='ns4')return dfind(tar).style;
	else return dfind(tar);
}

function getx(tar) 
{
	if(browser=='ie')return dstyle(tar).pixelLeft;
	else return parseInt(dstyle(tar).left)
}

function gety(tar) 
{
	if(browser=='ie')return dstyle(tar).pixelTop;
	else return parseInt(dstyle(tar).top)
}

function getv(tar) 
{
	if(dstyle(tar).visibility=='visible'||dstyle(tar).visibility=='show')return true;
	else return false;
}

function setx(tar,value){browser=='ie'?dstyle(tar).pixelLeft=value:dstyle(tar).left=value;} 
function sety(tar,value){browser=='ie'?dstyle(tar).pixelTop=value:dstyle(tar).top=value;} 
function setv(tar,mode){mode==1?dstyle(tar).visibility='visible':dstyle(tar).visibility='hidden';} 

function setc(tar,mode,value) 
{
	var ref=dstyle(tar);
	switch(mode)
	{
		case't':{browser=='ns4'?ref.clip.top=value:ref.clip='rect('+value+'px auto auto auto)';break;}
		case'r':{browser=='ns4'?ref.clip.right=value:ref.clip='rect(auto '+value+'px auto auto)';break;}
		case'b':{browser=='ns4'?ref.clip.bottom=value:ref.clip='rect(auto auto '+value+'px auto)';break;}
		case'l':{browser=='ns4'?ref.clip.left=value:ref.clip='rect(auto auto auto '+value+'px)';break;}
	}
}