Add an onmousedown event handler to the click. var trs = document.getElementById('table1').getElementsByTagName('tr'); var choose; window.onload = function(){ for( var i=0; i< ;trs.length; i ){
trs[i].onmousedown = function(){
tronmousedown(this);
}
}
}
function tronmousedown(obj) { for( var o=1; o if( trs[o] == obj ){ trs[o].style.backgroundColor = 'lightblue'; choose = o; } else{ trs[o].style.backgroundColor = ''; } } }
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